Month Percent 1898-01-01 3.78000 1898-02-01 3.78000 1898-03-01 3.78000 1898-04-01 3.83000 1898-05-01 3.83000 1898-06-01 3.83000 1898-07-01 3.68000 1898-08-01 3.68000 1898-09-01 3.68000 1898-10-01 3.68000 1898-11-01 3.68000 1898-12-01 3.68000 1899-01-01 3.78000 1899-02-01 3.65000 1899-03-01 3.65000 1899-04-01 3.60000 1899-05-01 3.69000 1899-06-01 3.84000 1899-07-01 3.88000 1899-08-01 3.88000 1899-09-01 3.83000 1899-10-01 3.74000 1899-11-01 3.78000 1899-12-01 3.88000 1900-01-01 3.83000 1900-02-01 3.70000 1900-03-01 3.74000 1900-04-01 3.70000 1900-05-01 3.78000 1900-06-01 3.89000 1900-07-01 3.98000 1900-08-01 3.88000 1900-09-01 3.93000 1900-10-01 4.04000 1900-11-01 3.98000 1900-12-01 3.83000 1901-01-01 3.73000 1901-02-01 3.68000 1901-03-01 3.68000 1901-04-01 3.63000 1901-05-01 3.63000 1901-06-01 3.73000 1901-07-01 3.78000 1901-08-01 3.78000 1901-09-01 3.83000 1901-10-01 3.90000 1901-11-01 3.90000 1901-12-01 3.90000 1902-01-01 3.73000 1902-02-01 3.73000 1902-03-01 3.67000 1902-04-01 3.73000 1902-05-01 3.78000 1902-06-01 3.83000 1902-07-01 3.90000 1902-08-01 3.96000 1902-09-01 3.96000 1902-10-01 3.96000 1902-11-01 3.96000 1902-12-01 3.96000 1903-01-01 3.96000 1903-02-01 3.90000 1903-03-01 3.90000 1903-04-01 4.07000 1903-05-01 4.07000 1903-06-01 4.13000 1903-07-01 4.13000 1903-08-01 4.07000 1903-09-01 4.07000 1903-10-01 4.00000 1903-11-01 4.07000 1903-12-01 4.18000 1904-01-01 4.31000 1904-02-01 4.38000 1904-03-01 4.30000 1904-04-01 4.25000 1904-05-01 4.43000 1904-06-01 4.36000 1904-07-01 4.36000 1904-08-01 4.30000 1904-09-01 4.17000 1904-10-01 4.00000 1904-11-01 4.00000 1904-12-01 4.00000 1905-01-01 3.99000 1905-02-01 3.88000 1905-03-01 3.94000 1905-04-01 3.98000 1905-05-01 3.93000 1905-06-01 3.98000 1905-07-01 3.93000 1905-08-01 3.83000 1905-09-01 3.83000 1905-10-01 3.83000 1905-11-01 3.93000 1905-12-01 4.14000 1906-01-01 4.18000 1906-02-01 4.07000 1906-03-01 4.07000 1906-04-01 4.13000 1906-05-01 4.13000 1906-06-01 4.17000 1906-07-01 4.28000 1906-08-01 4.07000 1906-09-01 4.12000 1906-10-01 4.06000 1906-11-01 4.01000 1906-12-01 4.11000 1907-01-01 4.01000 1907-02-01 3.97000 1907-03-01 4.16000 1907-04-01 4.16000 1907-05-01 4.26000 1907-06-01 4.37000 1907-07-01 4.32000 1907-08-01 4.32000 1907-09-01 4.32000 1907-10-01 4.38000 1907-11-01 4.38000 1907-12-01 4.32000 1908-01-01 4.22000 1908-02-01 4.16000 1908-03-01 4.16000 1908-04-01 4.16000 1908-05-01 4.22000 1908-06-01 4.15000 1908-07-01 4.15000 1908-08-01 4.05000 1908-09-01 4.05000 1908-10-01 4.02000 1908-11-01 3.97000 1908-12-01 4.02000 1909-01-01 3.97000 1909-02-01 3.92000 1909-03-01 3.87000 1909-04-01 3.87000 1909-05-01 3.82000 1909-06-01 3.82000 1909-07-01 3.87000 1909-08-01 3.82000 1909-09-01 3.74000 1909-10-01 3.70000 1909-11-01 3.74000 1909-12-01 3.74000 1910-01-01 3.70000 1910-02-01 3.66000 1910-03-01 3.70000 1910-04-01 3.70000 1910-05-01 3.78000 1910-06-01 3.82000 1910-07-01 3.83000 1910-08-01 3.74000 1910-09-01 3.70000 1910-10-01 3.70000 1910-11-01 3.74000 1910-12-01 3.74000 1911-01-01 3.70000 1911-02-01 3.70000 1911-03-01 3.74000 1911-04-01 3.70000 1911-05-01 3.70000 1911-06-01 3.66000 1911-07-01 3.78000 1911-08-01 3.78000 1911-09-01 3.86000 1911-10-01 3.71000 1911-11-01 3.71000 1911-12-01 3.71000 1912-01-01 3.65000 1912-02-01 3.63000 1912-03-01 3.58000 1912-04-01 3.51000 1912-05-01 3.41000 1912-06-01 3.44000 1912-07-01 3.51000 1912-08-01 3.41000 1912-09-01 3.35000 1912-10-01 3.55000 1912-11-01 3.51000 1912-12-01 3.59000 1913-01-01 3.55000 1913-02-01 3.63000 1913-03-01 3.70000 1913-04-01 3.70000 1913-05-01 3.75000 1913-06-01 3.95000 1913-07-01 3.85000 1913-08-01 3.70000 1913-09-01 3.75000 1913-10-01 3.85000 1913-11-01 3.85000 1913-12-01 3.97000 1914-01-01 3.94000 1914-02-01 3.97000 1914-03-01 4.06000 1914-04-01 4.06000 1914-05-01 4.20000 1914-06-01 4.15000 1914-07-01 4.60000 1919-01-01 3.36000 1919-02-01 3.45000 1919-03-01 3.54000 1919-04-01 3.45000 1919-05-01 3.33000 1919-06-01 3.26000 1919-07-01 3.40000 1919-08-01 3.32000 1919-09-01 3.14000 1919-10-01 3.06000 1919-11-01 3.04000 1919-12-01 3.09000 1920-01-01 3.03000 1920-02-01 2.82000 1920-03-01 2.56000 1920-04-01 2.42000 1920-05-01 2.62000 1920-06-01 2.95000 1920-07-01 2.93000 1920-08-01 3.24000 1920-09-01 3.21000 1920-10-01 3.44000 1920-11-01 3.84000 1920-12-01 3.75000 1921-01-01 3.81000 1921-02-01 4.15000 1921-03-01 3.94000 1921-04-01 3.94000 1921-05-01 4.15000 1921-06-01 4.39000 1921-07-01 4.50000 1921-08-01 4.15000 1921-09-01 4.18000 1921-10-01 4.33000 1921-11-01 4.40000 1921-12-01 4.35000 1922-01-01 4.39000 1922-02-01 4.59000 1922-03-01 4.61000 1922-04-01 4.75000 1922-05-01 4.55000 1922-06-01 4.53000 1922-07-01 4.37000 1922-08-01 3.99000 1922-09-01 4.03000 1922-10-01 3.81000 1922-11-01 3.64000 1922-12-01 3.59000 1923-01-01 3.36000 1923-02-01 3.30000 1923-03-01 3.46000 1923-04-01 3.44000 1923-05-01 3.47000 1923-06-01 3.34000 1923-07-01 3.18000 1923-08-01 3.17000 1923-09-01 3.42000 1923-10-01 3.34000 1923-11-01 3.19000 1923-12-01 3.11000 1924-01-01 2.98000 1924-02-01 2.79000 1924-03-01 3.21000 1924-04-01 3.26000 1924-05-01 3.32000 1924-06-01 3.41000 1924-07-01 3.39000 1924-08-01 3.54000 1924-09-01 3.53000 1924-10-01 3.46000 1924-11-01 3.62000 1924-12-01 3.74000 1925-01-01 3.78000 1925-02-01 3.86000 1925-03-01 3.86000 1925-04-01 3.87000 1925-05-01 4.11000 1925-06-01 4.08000 1925-07-01 3.84000 1925-08-01 3.87000 1925-09-01 4.00000 1925-10-01 4.15000 1925-11-01 4.10000 1925-12-01 4.05000 1926-01-01 4.00000 1926-02-01 3.94000 1926-03-01 4.18000 1926-04-01 4.13000 1926-05-01 4.06000 1926-06-01 3.75000 1926-07-01 3.31000 1926-08-01 3.40000 1926-09-01 3.20000 1926-10-01 3.34000 1926-11-01 3.60000 1926-12-01 3.70000 1927-01-01 3.52000 1927-02-01 3.58000 1927-03-01 3.49000 1927-04-01 3.38000 1927-05-01 3.47000 1927-06-01 3.62000 1927-07-01 3.49000 1927-08-01 3.52000 1927-09-01 3.47000 1927-10-01 3.47000 1927-11-01 3.52000 1927-12-01 3.26000 1928-01-01 2.98000 1928-02-01 3.09000 1928-03-01 2.80000 1928-04-01 2.54000 1928-05-01 2.59000 1928-06-01 2.62000 1928-07-01 2.97000 1928-08-01 2.69000 1928-09-01 2.64000 1928-10-01 2.66000 1928-11-01 2.59000 1928-12-01 2.52000 1929-01-01 2.24000 1929-02-01 2.28000 1929-03-01 2.38000 1929-04-01 2.47000 1929-05-01 2.55000 1929-06-01 2.91000 1929-07-01 2.88000 1929-08-01 2.85000 1929-09-01 2.76000 1929-10-01 2.92000 1929-11-01 3.07000 1929-12-01 3.05000 1930-01-01 2.89000 1930-02-01 2.98000 1930-03-01 3.00000 1930-04-01 2.96000 1930-05-01 3.11000 1930-06-01 3.31000 1930-07-01 3.33000 1930-08-01 3.46000 1930-09-01 3.54000 1930-10-01 3.63000 1930-11-01 3.95000 1930-12-01 4.26000 1931-01-01 4.08000 1931-02-01 3.90000 1931-03-01 4.12000 1931-04-01 4.21000 1931-05-01 4.27000 1931-06-01 3.86000 1931-07-01 4.01000 1931-08-01 4.15000 1931-09-01 4.78000 1931-10-01 4.98000 1931-11-01 5.03000 1931-12-01 5.31000 1932-01-01 4.93000 1932-02-01 4.27000 1932-03-01 4.41000 1932-04-01 4.84000 1932-05-01 5.47000 1932-06-01 4.94000 1932-07-01 4.64000 1932-08-01 4.51000 1932-09-01 4.25000 1932-10-01 4.47000 1932-11-01 4.31000 1932-12-01 4.17000 1933-01-01 4.09000 1933-02-01 4.09000 1933-03-01 4.20000 1933-04-01 4.06000 1933-05-01 3.75000 1933-06-01 3.60000 1933-07-01 3.45000 1933-08-01 3.48000 1933-09-01 3.60000 1933-10-01 3.65000 1933-11-01 3.70000 1933-12-01 3.70000 1934-01-01 3.81000 1934-02-01 3.83000 1934-03-01 4.09000 1934-04-01 3.94000 1934-05-01 3.94000 1934-06-01 3.91000 1934-07-01 3.99000 1934-08-01 4.11000 1934-09-01 4.33000 1934-10-01 4.23000 1934-11-01 4.17000 1934-12-01 4.20000 1935-01-01 3.74000 1935-02-01 3.84000 1935-03-01 3.92000 1935-04-01 3.79000 1935-05-01 3.53000 1935-06-01 3.74000 1935-07-01 3.91000 1935-08-01 3.63000 1935-09-01 3.74000 1935-10-01 3.71000 1935-11-01 3.78000 1935-12-01 3.67000 1936-01-01 3.54000 1936-02-01 3.46000 1936-03-01 3.56000 1936-04-01 3.58000 1936-05-01 4.25000 1936-06-01 4.35000 1936-07-01 4.80000 1936-08-01 4.83000 1936-09-01 4.41000 1936-10-01 3.66000 1936-11-01 3.53000 1936-12-01 3.58000 1937-01-01 3.11000 1937-02-01 3.23000 1937-03-01 3.27000 1937-04-01 3.70000 1937-05-01 3.84000 1937-06-01 3.91000 1937-07-01 4.22000 1937-08-01 4.10000 1937-09-01 4.27000 1937-10-01 4.18000 1937-11-01 4.19000 1937-12-01 4.34000 1938-01-01 4.51000 1938-02-01 4.53000 1938-03-01 4.66000 1938-04-01 4.08000 1938-05-01 4.15000 1938-06-01 4.27000 1938-07-01 4.39000 1938-08-01 4.34000 1938-09-01 4.47000 1938-10-01 4.28000 1938-11-01 4.12000 1938-12-01 3.63000 1939-01-01 4.09000 1939-02-01 3.89000 1939-03-01 3.99000 1939-04-01 4.04000 1939-05-01 3.89000 1939-06-01 4.20000 1939-07-01 4.24000