Month Percent 1871-01-01 5.63000 1871-02-01 5.51000 1871-03-01 5.37000 1871-04-01 5.22000 1871-05-01 5.12000 1871-06-01 5.03000 1871-07-01 5.17000 1871-08-01 5.16000 1871-09-01 5.10000 1871-10-01 5.38000 1871-11-01 5.32000 1871-12-01 5.23000 1872-01-01 5.46000 1872-02-01 5.41000 1872-03-01 5.27000 1872-04-01 5.14000 1872-05-01 5.13000 1872-06-01 5.19000 1872-07-01 5.22000 1872-08-01 5.92000 1872-09-01 6.22000 1872-10-01 6.25000 1872-11-01 6.11000 1872-12-01 6.03000 1873-01-01 5.79000 1873-02-01 5.84000 1873-03-01 6.29000 1873-04-01 6.69000 1873-05-01 6.69000 1873-06-01 6.87000 1873-07-01 6.98000 1873-08-01 6.99000 1873-09-01 7.60000 1873-10-01 8.47000 1873-11-01 7.45000 1873-12-01 6.71000 1874-01-01 5.17000 1874-02-01 5.00000 1874-03-01 5.18000 1874-04-01 5.38000 1874-05-01 6.51000 1874-06-01 6.67000 1874-07-01 6.66000 1874-08-01 6.60000 1874-09-01 6.60000 1874-10-01 6.60000 1874-11-01 6.57000 1874-12-01 6.68000 1875-01-01 7.12000 1875-02-01 7.16000 1875-03-01 7.08000 1875-04-01 6.49000 1875-05-01 6.55000 1875-06-01 6.79000 1875-07-01 6.25000 1875-08-01 6.15000 1875-09-01 6.26000 1875-10-01 6.35000 1875-11-01 6.26000 1875-12-01 6.57000 1876-01-01 6.90000 1876-02-01 6.83000 1876-03-01 6.46000 1876-04-01 6.28000 1876-05-01 6.43000 1876-06-01 6.64000 1876-07-01 6.38000 1876-08-01 6.71000 1876-09-01 7.12000 1876-10-01 6.79000 1876-11-01 6.86000 1876-12-01 7.11000 1877-01-01 6.22000 1877-02-01 6.59000 1877-03-01 6.81000 1877-04-01 7.21000 1877-05-01 6.74000 1877-06-01 7.07000 1877-07-01 6.39000 1877-08-01 5.22000 1877-09-01 4.81000 1877-10-01 4.61000 1877-11-01 4.67000 1877-12-01 4.73000 1878-01-01 4.93000 1878-02-01 5.14000 1878-03-01 5.06000 1878-04-01 4.92000 1878-05-01 4.88000 1878-06-01 4.34000 1878-07-01 4.24000 1878-08-01 4.32000 1878-09-01 4.58000 1878-10-01 4.64000 1878-11-01 4.88000 1878-12-01 4.90000 1879-01-01 4.95000 1879-02-01 4.62000 1879-03-01 4.71000 1879-04-01 4.55000 1879-05-01 4.62000 1879-06-01 4.56000 1879-07-01 4.51000 1879-08-01 4.54000 1879-09-01 4.41000 1879-10-01 4.08000 1879-11-01 3.96000 1879-12-01 4.26000 1880-01-01 4.20000 1880-02-01 4.17000 1880-03-01 4.00000 1880-04-01 4.22000 1880-05-01 4.76000 1880-06-01 5.12000 1880-07-01 4.97000 1880-08-01 4.83000 1880-09-01 4.80000 1880-10-01 4.73000 1880-11-01 4.60000 1880-12-01 4.43000 1881-01-01 4.15000 1881-02-01 4.22000 1881-03-01 4.06000 1881-04-01 4.11000 1881-05-01 3.94000 1881-06-01 4.04000 1881-07-01 4.26000 1881-08-01 4.30000 1881-09-01 4.41000 1881-10-01 4.47000 1881-11-01 4.46000 1881-12-01 5.06000 1882-01-01 4.91000 1882-02-01 5.05000 1882-03-01 5.05000 1882-04-01 4.84000 1882-05-01 5.06000 1882-06-01 5.19000 1882-07-01 5.12000 1882-08-01 4.89000 1882-09-01 4.93000 1882-10-01 5.16000 1882-11-01 5.38000 1882-12-01 5.42000 1883-01-01 5.44000 1883-02-01 5.64000 1883-03-01 5.55000 1883-04-01 5.45000 1883-05-01 5.55000 1883-06-01 5.58000 1883-07-01 5.75000 1883-08-01 6.00000 1883-09-01 5.97000 1883-10-01 6.18000 1883-11-01 6.16000 1883-12-01 6.00000 1884-01-01 6.07000 1884-02-01 5.90000 1884-03-01 5.99000 1884-04-01 6.28000 1884-05-01 6.74000 1884-06-01 7.28000 1884-07-01 6.93000 1884-08-01 6.53000 1884-09-01 6.42000 1884-10-01 6.26000 1884-11-01 6.40000 1884-12-01 6.39000 1885-01-01 6.15000 1885-02-01 5.93000 1885-03-01 5.90000 1885-04-01 5.50000 1885-05-01 5.55000 1885-06-01 5.60000 1885-07-01 5.22000 1885-08-01 4.85000 1885-09-01 4.90000 1885-10-01 4.61000 1885-11-01 4.19000 1885-12-01 4.22000 1886-01-01 4.23000 1886-02-01 4.13000 1886-03-01 4.15000 1886-04-01 4.13000 1886-05-01 4.29000 1886-06-01 3.80000 1886-07-01 3.74000 1886-08-01 3.71000 1886-09-01 3.65000 1886-10-01 3.55000 1886-11-01 3.47000 1886-12-01 3.70000 1887-01-01 3.74000 1887-02-01 3.78000 1887-03-01 3.71000 1887-04-01 3.63000 1887-05-01 3.59000 1887-06-01 3.78000 1887-07-01 4.14000 1887-08-01 4.24000 1887-09-01 4.33000 1887-10-01 4.62000 1887-11-01 4.63000 1887-12-01 4.67000 1888-01-01 4.56000 1888-02-01 4.59000 1888-03-01 4.83000 1888-04-01 4.82000 1888-05-01 4.62000 1888-06-01 4.45000 1888-07-01 4.33000 1888-08-01 4.25000 1888-09-01 4.06000 1888-10-01 3.95000 1888-11-01 3.83000 1888-12-01 3.91000 1889-01-01 3.78000 1889-02-01 3.82000 1889-03-01 3.90000 1889-04-01 3.92000 1889-05-01 3.80000 1889-06-01 3.84000 1889-07-01 4.08000 1889-08-01 4.04000 1889-09-01 3.91000 1889-10-01 3.97000 1889-11-01 3.99000 1889-12-01 4.03000 1890-01-01 3.65000 1890-02-01 3.67000 1890-03-01 3.77000 1890-04-01 3.72000 1890-05-01 3.54000 1890-06-01 3.60000 1890-07-01 3.82000 1890-08-01 3.87000 1890-09-01 3.96000 1890-10-01 3.84000 1890-11-01 4.19000 1890-12-01 4.37000 1891-01-01 4.20000 1891-02-01 4.14000 1891-03-01 4.28000 1891-04-01 4.16000 1891-05-01 4.24000 1891-06-01 4.41000 1891-07-01 4.55000 1891-08-01 4.34000 1891-09-01 3.95000 1891-10-01 3.94000 1891-11-01 4.04000 1891-12-01 4.01000 1892-01-01 3.92000 1892-02-01 3.94000 1892-03-01 3.95000 1892-04-01 3.97000 1892-05-01 3.98000 1892-06-01 4.01000 1892-07-01 3.97000 1892-08-01 3.90000 1892-09-01 4.00000 1892-10-01 3.95000 1892-11-01 4.05000 1892-12-01 4.09000 1893-01-01 4.14000 1893-02-01 4.26000 1893-03-01 4.54000 1893-04-01 4.48000 1893-05-01 4.81000 1893-06-01 5.05000 1893-07-01 5.55000 1893-08-01 5.59000 1893-09-01 5.28000 1893-10-01 4.79000 1893-11-01 4.73000 1893-12-01 4.89000 1894-01-01 4.87000 1894-02-01 4.57000 1894-03-01 4.43000 1894-04-01 4.37000 1894-05-01 4.53000 1894-06-01 4.57000 1894-07-01 4.63000 1894-08-01 4.57000 1894-09-01 4.47000 1894-10-01 4.57000 1894-11-01 4.52000 1894-12-01 4.58000 1895-01-01 4.56000 1895-02-01 4.66000 1895-03-01 4.62000 1895-04-01 4.24000 1895-05-01 3.96000 1895-06-01 3.82000 1895-07-01 3.74000 1895-08-01 3.69000 1895-09-01 3.69000 1895-10-01 3.75000 1895-11-01 3.89000 1895-12-01 4.06000 1896-01-01 3.85000 1896-02-01 3.65000 1896-03-01 4.00000 1896-04-01 4.02000 1896-05-01 3.90000 1896-06-01 4.06000 1896-07-01 4.36000 1896-08-01 4.62000 1896-09-01 4.34000 1896-10-01 4.13000 1896-11-01 3.88000 1896-12-01 4.01000 1897-01-01 4.00000 1897-02-01 4.12000 1897-03-01 4.09000 1897-04-01 4.14000 1897-05-01 4.13000 1897-06-01 3.96000 1897-07-01 3.80000 1897-08-01 3.50000 1897-09-01 3.33000 1897-10-01 3.45000 1897-11-01 3.65000 1897-12-01 3.55000 1898-01-01 3.44000 1898-02-01 3.52000 1898-03-01 3.74000 1898-04-01 3.80000 1898-05-01 3.58000 1898-06-01 3.45000 1898-07-01 3.56000 1898-08-01 3.40000 1898-09-01 3.53000 1898-10-01 3.63000 1898-11-01 3.63000 1898-12-01 3.48000 1899-01-01 3.17000 1899-02-01 2.98000 1899-03-01 2.91000 1899-04-01 2.86000 1899-05-01 3.02000 1899-06-01 3.06000 1899-07-01 3.17000 1899-08-01 3.08000 1899-09-01 3.08000 1899-10-01 3.22000 1899-11-01 3.21000 1899-12-01 3.47000 1900-01-01 3.70000 1900-02-01 3.66000 1900-03-01 3.61000 1900-04-01 3.69000 1900-05-01 3.87000 1900-06-01 3.99000 1900-07-01 3.94000 1900-08-01 4.01000 1900-09-01 4.24000 1900-10-01 4.29000 1900-11-01 4.02000 1900-12-01 3.82000 1901-01-01 3.64000 1901-02-01 3.56000 1901-03-01 3.28000 1901-04-01 2.97000 1901-05-01 3.20000 1901-06-01 3.10000 1901-07-01 3.42000 1901-08-01 3.35000 1901-09-01 3.53000 1901-10-01 3.60000 1901-11-01 3.45000 1901-12-01 3.72000 1902-01-01 3.63000 1902-02-01 3.54000 1902-03-01 3.66000 1902-04-01 3.54000 1902-05-01 3.40000 1902-06-01 3.55000 1902-07-01 3.53000 1902-08-01 3.47000 1902-09-01 3.50000 1902-10-01 3.60000 1902-11-01 3.68000 1902-12-01 3.84000 1903-01-01 3.70000 1903-02-01 3.74000 1903-03-01 3.89000 1903-04-01 4.03000 1903-05-01 4.13000 1903-06-01 4.49000 1903-07-01 4.73000 1903-08-01 4.91000 1903-09-01 5.02000 1903-10-01 5.18000 1903-11-01 5.19000 1903-12-01 4.57000 1904-01-01 4.34000 1904-02-01 4.47000 1904-03-01 4.49000 1904-04-01 4.39000 1904-05-01 4.50000 1904-06-01 4.47000 1904-07-01 4.33000 1904-08-01 4.19000 1904-09-01 4.01000 1904-10-01 3.78000 1904-11-01 3.58000 1904-12-01 3.57000 1905-01-01 3.55000 1905-02-01 3.48000 1905-03-01 3.37000 1905-04-01 3.42000 1905-05-01 3.59000 1905-06-01 3.50000 1905-07-01 3.40000 1905-08-01 3.35000 1905-09-01 3.36000 1905-10-01 3.37000 1905-11-01 3.39000 1905-12-01 3.31000 1906-01-01 3.22000 1906-02-01 3.31000 1906-03-01 3.51000 1906-04-01 3.54000 1906-05-01 3.64000 1906-06-01 3.57000 1906-07-01 3.68000 1906-08-01 3.36000 1906-09-01 3.48000 1906-10-01 3.55000 1906-11-01 3.63000 1906-12-01 3.82000 1907-01-01 3.97000 1907-02-01 4.15000 1907-03-01 4.87000 1907-04-01 4.87000 1907-05-01 5.00000 1907-06-01 5.22000 1907-07-01 5.08000 1907-08-01 5.44000 1907-09-01 5.61000 1907-10-01 6.32000 1907-11-01 6.54000 1907-12-01 6.13000 1908-01-01 5.88000 1908-02-01 6.02000 1908-03-01 5.62000 1908-04-01 5.34000 1908-05-01 5.00000 1908-06-01 4.96000 1908-07-01 4.81000 1908-08-01 4.62000 1908-09-01 4.66000 1908-10-01 4.72000 1908-11-01 4.42000 1908-12-01 4.27000 1909-01-01 4.36000 1909-02-01 4.51000 1909-03-01 4.47000 1909-04-01 4.31000 1909-05-01 4.18000 1909-06-01 4.15000 1909-07-01 4.12000 1909-08-01 4.03000 1909-09-01 4.10000 1909-10-01 4.09000 1909-11-01 4.11000 1909-12-01 4.17000 1910-01-01 4.20000 1910-02-01 4.38000 1910-03-01 4.33000 1910-04-01 4.42000 1910-05-01 4.50000 1910-06-01 4.84000 1910-07-01 5.12000 1910-08-01 5.01000 1910-09-01 5.07000 1910-10-01 4.86000 1910-11-01 4.87000 1910-12-01 5.03000 1911-01-01 5.06000 1911-02-01 4.97000 1911-03-01 4.88000 1911-04-01 4.89000 1911-05-01 4.81000 1911-06-01 4.70000 1911-07-01 4.70000 1911-08-01 4.94000 1911-09-01 5.21000 1911-10-01 5.16000 1911-11-01 4.96000 1911-12-01 4.95000 1912-01-01 4.84000 1912-02-01 4.92000 1912-03-01 4.91000 1912-04-01 4.77000 1912-05-01 4.79000 1912-06-01 4.77000 1912-07-01 4.76000 1912-08-01 4.63000 1912-09-01 4.57000 1912-10-01 4.60000 1912-11-01 4.65000 1912-12-01 4.85000 1913-01-01 4.87000 1913-02-01 4.94000 1913-03-01 5.13000 1913-04-01 5.13000 1913-05-01 5.29000 1913-06-01 5.64000 1913-07-01 5.59000 1913-08-01 5.43000 1913-09-01 5.37000 1913-10-01 5.32000 1913-11-01 5.70000 1913-12-01 5.38000 1914-01-01 5.11000 1914-02-01 5.09000 1914-03-01 5.10000 1914-04-01 5.20000 1914-05-01 5.16000 1914-06-01 5.07000 1914-07-01 5.32000 1914-08-01 5.36000 1914-09-01 5.39000 1914-10-01 5.43000 1914-11-01 5.46000 1914-12-01 5.50000 1915-01-01 5.59000 1915-02-01 5.67000 1915-03-01 5.40000 1915-04-01 5.03000 1915-05-01 5.16000 1915-06-01 5.09000 1915-07-01 5.01000 1915-08-01 4.84000 1915-09-01 4.66000 1915-10-01 4.41000 1915-11-01 4.24000 1915-12-01 4.32000 1916-01-01 4.48000 1916-02-01 4.54000 1916-03-01 5.15000 1916-04-01 5.20000 1916-05-01 5.10000 1916-06-01 5.46000 1916-07-01 5.61000 1916-08-01 5.62000 1916-09-01 5.50000 1916-10-01 5.38000 1916-11-01 5.26000 1916-12-01 5.73000 1917-01-01 6.35000 1917-02-01 6.61000 1917-03-01 6.56000 1917-04-01 6.66000 1917-05-01 6.91000 1917-06-01 7.08000 1917-07-01 7.41000 1917-08-01 7.53000 1917-09-01 7.93000 1917-10-01 8.38000 1917-11-01 9.07000 1917-12-01 9.30000 1918-01-01 7.96000 1918-02-01 7.73000 1918-03-01 7.85000 1918-04-01 7.85000 1918-05-01 7.66000 1918-06-01 7.63000 1918-07-01 7.65000 1918-08-01 7.57000 1918-09-01 7.48000 1918-10-01 7.19000 1918-11-01 7.02000 1918-12-01 7.16000 1919-01-01 7.21000 1919-02-01 7.09000 1919-03-01 6.36000 1919-04-01 6.15000 1919-05-01 5.65000 1919-06-01 5.27000 1919-07-01 5.12000 1919-08-01 5.44000 1919-09-01 5.19000 1919-10-01 4.97000 1919-11-01 5.08000 1919-12-01 5.26000 1920-01-01 5.35000 1920-02-01 5.85000 1920-03-01 5.50000 1920-04-01 5.63000 1920-05-01 5.99000 1920-06-01 6.16000 1920-07-01 6.39000 1920-08-01 6.67000 1920-09-01 6.43000 1920-10-01 6.45000 1920-11-01 6.79000 1920-12-01 7.27000 1921-01-01 6.84000 1921-02-01 6.80000 1921-03-01 6.80000 1921-04-01 6.66000 1921-05-01 6.22000 1921-06-01 6.56000 1921-07-01 6.60000 1921-08-01 6.64000 1921-09-01 6.44000 1921-10-01 6.39000 1921-11-01 6.06000 1921-12-01 5.77000 1922-01-01 6.27000 1922-02-01 6.14000 1922-03-01 5.89000 1922-04-01 5.47000 1922-05-01 5.26000 1922-06-01 5.36000 1922-07-01 5.51000 1922-08-01 5.33000 1922-09-01 5.22000 1922-10-01 5.12000 1922-11-01 5.48000 1922-12-01 5.63000 1923-01-01 5.02000 1923-02-01 4.86000 1923-03-01 4.79000 1923-04-01 5.00000 1923-05-01 5.27000 1923-06-01 5.61000 1923-07-01 6.02000 1923-08-01 6.01000 1923-09-01 6.11000 1923-10-01 6.21000 1923-11-01 6.04000 1923-12-01 5.93000 1924-01-01 5.77000 1924-02-01 5.79000 1924-03-01 5.96000 1924-04-01 5.99000 1924-05-01 6.02000 1924-06-01 5.94000 1924-07-01 5.77000 1924-08-01 5.55000 1924-09-01 5.56000 1924-10-01 5.62000 1924-11-01 5.32000 1924-12-01 5.08000 1925-01-01 4.90000 1925-02-01 4.94000 1925-03-01 5.11000 1925-04-01 5.23000 1925-05-01 5.09000 1925-06-01 5.03000 1925-07-01 5.04000 1925-08-01 4.98000 1925-09-01 5.00000 1925-10-01 4.95000 1925-11-01 4.81000 1925-12-01 4.83000 1926-01-01 4.66000 1926-02-01 4.66000 1926-03-01 4.98000 1926-04-01 5.19000 1926-05-01 5.20000 1926-06-01 5.02000 1926-07-01 5.04000 1926-08-01 4.91000 1926-09-01 4.98000 1926-10-01 5.15000 1926-11-01 5.11000 1926-12-01 5.19000 1927-01-01 5.13000 1927-02-01 5.04000 1927-03-01 4.94000 1927-04-01 4.87000 1927-05-01 4.74000 1927-06-01 4.69000 1927-07-01 4.68000 1927-08-01 4.51000 1927-09-01 4.30000 1927-10-01 4.36000 1927-11-01 4.25000 1927-12-01 4.25000 1928-01-01 4.17000 1928-02-01 4.28000 1928-03-01 4.12000 1928-04-01 3.90000 1928-05-01 3.75000 1928-06-01 3.94000 1928-07-01 4.00000 1928-08-01 3.89000 1928-09-01 3.72000 1928-10-01 3.70000 1928-11-01 3.44000 1928-12-01 3.48000 1929-01-01 3.19000 1929-02-01 3.24000 1929-03-01 3.21000 1929-04-01 3.26000 1929-05-01 3.25000 1929-06-01 3.25000 1929-07-01 3.06000 1929-08-01 2.92000 1929-09-01 2.90000 1929-10-01 3.27000 1929-11-01 4.38000 1929-12-01 4.35000 1930-01-01 4.24000 1930-02-01 4.02000 1930-03-01 3.84000 1930-04-01 3.65000 1930-05-01 3.94000 1930-06-01 4.32000 1930-07-01 4.43000 1930-08-01 4.36000 1930-09-01 4.23000 1930-10-01 4.99000 1930-11-01 5.43000 1930-12-01 5.62000 1931-01-01 5.38000 1931-02-01 4.97000 1931-03-01 4.79000 1931-04-01 5.16000 1931-05-01 5.75000 1931-06-01 5.70000 1931-07-01 5.30000 1931-08-01 5.57000 1931-09-01 5.93000 1931-10-01 7.15000 1931-11-01 6.71000 1931-12-01 7.88000 1932-01-01 7.75000 1932-02-01 7.80000 1932-03-01 6.93000 1932-04-01 8.39000 1932-05-01 9.14000 1932-06-01 9.63000 1932-07-01 8.78000 1932-08-01 5.73000 1932-09-01 4.96000 1932-10-01 5.59000 1932-11-01 6.00000 1932-12-01 5.98000 1933-01-01 5.68000 1933-02-01 6.13000 1933-03-01 6.01000 1933-04-01 5.50000 1933-05-01 4.10000 1933-06-01 3.29000 1933-07-01 2.99000 1933-08-01 3.19000 1933-09-01 3.10000 1933-10-01 3.36000 1933-11-01 3.40000 1933-12-01 3.65000 1934-01-01 3.53000 1934-02-01 3.35000 1934-03-01 3.45000 1934-04-01 3.38000 1934-05-01 3.75000 1934-06-01 3.69000 1934-07-01 3.86000 1934-08-01 4.12000 1934-09-01 4.20000 1934-10-01 4.15000 1934-11-01 4.12000 1934-12-01 4.12000 1935-01-01 4.17000 1935-02-01 4.30000 1935-03-01 4.42000 1935-04-01 4.25000 1935-05-01 3.93000 1935-06-01 3.80000 1935-07-01 3.68000 1935-08-01 3.51000 1935-09-01 3.58000 1935-10-01 3.60000 1935-11-01 3.30000 1935-12-01 3.28000 1936-01-01 3.15000 1936-02-01 3.11000 1936-03-01 3.10000 1936-04-01 3.11000 1936-05-01 3.38000 1936-06-01 3.39000 1936-07-01 3.33000 1936-08-01 3.24000 1936-09-01 3.36000 1936-10-01 3.53000 1936-11-01 3.60000 1936-12-01 3.76000 1937-01-01 3.38000 1937-02-01 3.16000 1937-03-01 3.06000 1937-04-01 3.22000 1937-05-01 3.39000 1937-06-01 4.07000 1937-07-01 3.94000 1937-08-01 3.95000 1937-09-01 4.55000 1937-10-01 5.48000 1937-11-01 6.22000 1937-12-01 6.70000 1938-01-01 6.46000 1938-02-01 5.15000 1938-03-01 4.76000 1938-04-01 5.12000 1938-05-01 4.64000 1938-06-01 4.31000 1938-07-01 3.59000 1938-08-01 3.55000 1938-09-01 3.72000 1938-10-01 3.58000 1938-11-01 3.74000 1938-12-01 3.98000