Month Percent 1875-03-01 163.000 1875-05-01 167.000 1875-06-01 166.000 1875-10-01 171.000 1875-12-01 178.000 1876-03-01 170.000 1876-05-01 173.000 1876-06-01 173.000 1876-10-01 172.000 1876-12-01 175.000 1877-01-01 164.000 1877-04-01 168.000 1877-06-01 168.000 1877-10-01 167.000 1877-12-01 168.000 1878-03-01 161.000 1878-05-01 164.000 1878-06-01 163.000 1878-10-01 156.000 1878-12-01 158.000 1879-01-01 153.000 1879-04-01 151.000 1879-06-01 149.000 1879-10-01 138.000 1879-12-01 139.000 1880-02-01 130.000 1880-04-01 134.000 1880-06-01 133.000 1880-10-01 127.000 1880-12-01 124.000 1881-03-01 123.000 1881-05-01 122.000 1881-06-01 117.000 1881-10-01 117.000 1881-12-01 119.000 1882-03-01 123.000 1882-05-01 124.000 1882-07-01 121.000 1882-10-01 124.000 1882-12-01 124.000 1883-03-01 125.000 1883-05-01 126.000 1883-06-01 127.000 1883-10-01 128.000 1883-12-01 127.000 1884-03-01 127.000 1884-04-01 130.000 1884-06-01 137.000 1884-09-01 136.000 1884-12-01 136.000 1885-03-01 130.000 1885-05-01 131.000 1885-07-01 128.000 1885-10-01 127.000 1885-12-01 129.000 1886-03-01 125.000 1886-06-01 128.000 1886-08-01 127.000 1886-10-01 127.000 1886-12-01 127.000 1887-03-01 123.000 1887-05-01 126.000 1887-08-01 125.000 1887-10-01 128.000 1887-12-01 130.000 1888-02-01 127.000 1888-04-01 129.000 1888-06-01 129.000 1888-10-01 128.000 1888-12-01 130.000 1889-02-01 124.000 1889-05-01 125.000 1889-07-01 124.000 1889-09-01 125.000 1889-12-01 128.000 1890-02-01 124.000 1890-05-01 127.000 1890-07-01 126.000 1890-10-01 127.000 1890-12-01 134.000 1891-02-01 129.000 1891-05-01 129.000 1891-07-01 130.000 1891-09-01 129.000 1891-12-01 127.000 1892-03-01 120.000 1892-05-01 120.000 1892-07-01 118.000 1892-09-01 120.000 1892-12-01 123.000 1893-03-01 122.000 1893-05-01 125.000 1893-07-01 130.000 1893-10-01 131.000 1893-12-01 126.000 1894-02-01 120.000 1894-05-01 119.000 1894-07-01 117.000 1894-10-01 117.000 1894-12-01 117.000 1895-03-01 115.000 1895-05-01 116.000 1895-07-01 115.000 1895-09-01 117.000 1895-12-01 119.000 1896-02-01 118.000 1896-05-01 118.000 1896-07-01 118.000 1896-10-01 117.000 1896-12-01 116.000 1897-03-01 111.000 1897-05-01 111.000 1897-07-01 109.000 1897-10-01 106.000 1897-12-01 104.000 1898-02-01 101.000 1898-05-01 102.000 1898-07-01 101.000 1898-09-01 100.000 1898-12-01 96.0000 1899-02-01 92.0000 1899-04-01 92.0000 1899-06-01 92.0000 1899-09-01 91.0000 1899-12-01 95.0000 1900-02-01 93.0000 1900-04-01 94.0000 1900-06-01 96.0000 1900-09-01 93.0000 1900-12-01 94.0000 1901-02-01 92.0000 1901-04-01 91.0000 1901-07-01 91.0000 1901-09-01 93.0000 1901-12-01 94.0000 1902-02-01 91.0000 1902-04-01 93.0000 1902-07-01 93.0000 1902-09-01 94.0000 1902-11-01 95.0000 1903-02-01 94.0000 1903-04-01 95.0000 1903-06-01 95.0000 1903-09-01 96.0000 1903-11-01 96.0000 1904-01-01 94.0000 1904-03-01 94.0000 1904-06-01 94.0000 1904-09-01 93.0000 1904-11-01 93.0000 1905-01-01 92.0000 1905-03-01 91.0000 1905-05-01 92.0000 1905-08-01 90.0000 1905-11-01 91.0000 1906-01-01 90.0000 1906-04-01 91.0000 1906-06-01 93.0000 1906-09-01 92.0000 1906-11-01 92.0000 1907-01-01 91.0000 1907-03-01 92.0000 1907-05-01 93.0000 1907-08-01 94.0000 1907-12-01 95.0000 1908-02-01 92.0000 1908-05-01 93.0000 1908-07-01 93.0000 1908-09-01 92.0000 1908-11-01 91.0000 1909-02-01 89.0000 1909-04-01 89.0000 1909-06-01 90.0000 1909-09-01 90.0000 1909-11-01 91.0000 1910-01-01 91.0000 1910-03-01 91.0000 1910-06-01 94.0000 1910-09-01 94.0000 1910-11-01 93.0000 1911-01-01 92.0000 1911-03-01 90.0000 1911-06-01 91.0000 1911-09-01 91.0000 1911-12-01 90.0000 1912-02-01 88.0000 1912-04-01 89.0000 1912-06-01 90.0000 1912-09-01 90.0000 1912-11-01 90.0000 1913-02-01 89.0000 1913-04-01 90.0000 1913-06-01 91.0000 1913-08-01 92.0000 1913-10-01 91.0000 1914-01-01 90.0000 1914-03-01 89.0000 1914-06-01 90.0000 1914-09-01 91.0000 1914-10-01 92.0000 1914-12-01 91.0000 1915-03-01 89.0000 1915-05-01 89.0000 1915-06-01 89.0000 1915-09-01 88.0000 1915-11-01 86.0000 1915-12-01 84.0000