Monthly Per Cent Of Total Membership
1888-01-01 8.40000
1888-02-01 10.1000
1888-03-01 10.7000
1888-04-01 8.50000
1888-05-01 5.20000
1888-06-01 3.50000
1888-07-01 2.80000
1888-08-01 3.30000
1888-09-01 3.40000
1888-10-01 3.30000
1888-11-01 3.20000
1888-12-01 3.30000
1889-01-01 6.00000
1889-02-01 6.70000
1889-03-01 6.40000
1889-04-01 4.70000
1889-05-01 3.70000
1889-06-01 1.90000
1889-07-01 1.70000
1889-08-01 1.70000
1889-09-01 1.50000
1889-10-01 1.50000
1889-11-01 1.60000
1889-12-01 1.70000
1890-01-01 3.30000
1890-02-01 3.00000
1890-03-01 3.00000
1890-04-01 2.80000
1890-05-01 2.00000
1890-06-01 1.60000
1890-07-01 1.80000
1890-08-01 2.00000
1890-09-01 1.50000
1890-10-01 1.40000
1890-11-01 1.50000
1890-12-01 1.90000
1891-01-01 5.00000
1891-02-01 5.50000
1891-03-01 3.00000
1891-04-01 2.80000
1891-05-01 1.50000
1891-06-01 2.50000
1891-07-01 1.90000
1891-08-01 1.10000
1891-09-01 1.90000
1891-10-01 1.30000
1891-11-01 1.40000
1891-12-01 1.50000
1892-01-01 3.30000
1892-02-01 3.80000
1892-03-01 4.40000
1892-04-01 4.50000
1892-05-01 2.80000
1892-06-01 2.30000
1892-07-01 2.30000
1892-08-01 2.10000
1892-09-01 2.10000
1892-10-01 2.40000
1892-11-01 3.20000
1892-12-01 3.00000
1893-01-01 6.10000
1893-02-01 5.00000
1893-03-01 3.80000
1893-04-01 2.50000
1893-05-01 2.50000
1893-06-01 2.60000
1893-07-01 2.80000
1893-08-01 2.80000
1893-09-01 3.10000
1893-10-01 3.90000
1893-11-01 4.00000
1893-12-01 6.50000
1894-01-01 7.30000
1894-02-01 4.40000
1894-03-01 3.80000
1894-04-01 3.10000
1894-05-01 3.60000
1894-06-01 3.80000
1894-07-01 3.60000
1894-08-01 3.20000
1894-09-01 3.60000
1894-10-01 3.80000
1894-11-01 4.20000
1894-12-01 5.70000
1895-01-01 8.20000
1895-02-01 10.1000
1895-03-01 4.90000
1895-04-01 3.30000
1895-05-01 2.50000
1895-06-01 2.50000
1895-07-01 2.40000
1895-08-01 1.80000
1895-09-01 1.60000
1895-10-01 1.90000
1895-11-01 2.10000
1895-12-01 3.80000
1896-01-01 3.70000
1896-02-01 2.50000
1896-03-01 2.60000
1896-04-01 1.50000
1896-05-01 1.60000
1896-06-01 1.50000
1896-07-01 1.80000
1896-08-01 1.10000
1896-09-01 1.30000
1896-10-01 0.900000
1896-11-01 0.900000
1896-12-01 2.10000
1897-01-01 2.40000
1897-02-01 2.00000
1897-03-01 1.20000
1897-04-01 1.00000
1897-05-01 0.800000
1897-06-01 1.50000
1897-07-01 1.30000
1897-08-01 1.20000
1897-09-01 1.40000
1897-10-01 1.70000
1897-11-01 1.60000
1897-12-01 2.80000
1898-01-01 2.00000
1898-02-01 1.70000
1898-03-01 1.60000
1898-04-01 1.10000
1898-05-01 1.20000
1898-06-01 1.20000
1898-07-01 1.00000
1898-08-01 0.900000
1898-09-01 0.900000
1898-10-01 0.900000
1898-11-01 1.10000
1898-12-01 1.80000
1899-01-01 1.70000
1899-02-01 1.50000
1899-03-01 1.60000
1899-04-01 1.30000
1899-05-01 1.30000
1899-06-01 1.50000
1899-07-01 1.10000
1899-08-01 1.20000
1899-09-01 1.30000
1899-10-01 1.10000
1899-11-01 1.50000
1899-12-01 2.50000
1900-01-01 2.70000
1900-02-01 3.10000
1900-03-01 2.60000
1900-04-01 2.20000
1900-05-01 1.90000
1900-06-01 2.00000
1900-07-01 1.80000
1900-08-01 1.80000
1900-09-01 2.10000
1900-10-01 2.50000
1900-11-01 3.30000
1900-12-01 4.20000
1901-01-01 4.70000
1901-02-01 5.20000
1901-03-01 4.70000
1901-04-01 3.40000
1901-05-01 3.10000
1901-06-01 3.30000
1901-07-01 3.00000
1901-08-01 2.70000
1901-09-01 2.90000
1901-10-01 3.10000
1901-11-01 3.50000
1901-12-01 5.20000
1902-01-01 5.00000
1902-02-01 5.90000
1902-03-01 4.50000
1902-04-01 3.50000
1902-05-01 3.00000
1902-06-01 3.40000
1902-07-01 3.60000
1902-08-01 3.40000
1902-09-01 3.80000
1902-10-01 4.40000
1902-11-01 4.60000
1902-12-01 5.90000
1903-01-01 6.40000
1903-02-01 5.50000
1903-03-01 4.10000
1903-04-01 3.40000
1903-05-01 3.30000
1903-06-01 4.20000
1903-07-01 3.80000
1903-08-01 3.60000
1903-09-01 4.40000
1903-10-01 5.70000
1903-11-01 6.30000
1903-12-01 7.70000
1904-01-01 7.90000
1904-02-01 7.30000
1904-03-01 7.00000
1904-04-01 6.70000
1904-05-01 6.40000
1904-06-01 6.70000
1904-07-01 6.40000
1904-08-01 6.40000
1904-09-01 7.30000
1904-10-01 8.40000
1904-11-01 10.1000
1904-12-01 11.2000
1905-01-01 11.2000
1905-02-01 10.2000
1905-03-01 8.50000
1905-04-01 7.90000
1905-05-01 7.20000
1905-06-01 7.20000
1905-07-01 7.00000
1905-08-01 6.70000
1905-09-01 7.30000
1905-10-01 8.60000
1905-11-01 8.70000
1905-12-01 9.60000
1906-01-01 10.3000
1906-02-01 9.80000
1906-03-01 8.10000
1906-04-01 6.00000
1906-05-01 5.70000
1906-06-01 5.90000
1906-07-01 6.00000
1906-08-01 5.50000
1906-09-01 6.20000
1906-10-01 7.60000
1906-11-01 6.90000
1906-12-01 8.40000
1907-01-01 9.00000
1907-02-01 8.60000
1907-03-01 6.80000
1907-04-01 5.50000
1907-05-01 5.50000
1907-06-01 6.10000
1907-07-01 6.10000
1907-08-01 5.60000
1907-09-01 6.90000
1907-10-01 8.10000
1907-11-01 9.00000
1907-12-01 10.9000
1908-01-01 11.6000
1908-02-01 11.3000
1908-03-01 10.7000
1908-04-01 9.90000
1908-05-01 9.90000
1908-06-01 9.70000
1908-07-01 11.0000
1908-08-01 10.3000
1908-09-01 11.9000
1908-10-01 13.6000
1908-11-01 13.1000
1908-12-01 14.9000
1909-01-01 15.1000
1909-02-01 13.9000
1909-03-01 13.3000
1909-04-01 11.4000
1909-05-01 9.60000
1909-06-01 10.9000
1909-07-01 10.4000
1909-08-01 10.1000
1909-09-01 10.9000
1909-10-01 11.3000
1909-11-01 10.4000
1909-12-01 12.9000
1910-01-01 13.7000
1910-02-01 10.6000
1910-03-01 8.90000
1910-04-01 7.40000
1910-05-01 7.40000
1910-06-01 6.80000
1910-07-01 6.40000
1910-08-01 5.70000
1910-09-01 7.60000
1910-10-01 9.00000
1910-11-01 9.50000
1910-12-01 10.6000
1911-01-01 9.90000
1911-02-01 8.30000
1911-03-01 6.50000
1911-04-01 5.10000
1911-05-01 3.50000
1911-06-01 4.20000
1911-07-01 3.90000
1911-08-01 4.00000
1911-09-01 2.90000
1911-10-01 3.10000
1911-11-01 3.40000
1911-12-01 4.90000
1912-01-01 5.40000
1912-02-01 4.90000
1912-03-01 6.10000
1912-04-01 4.90000
1912-05-01 4.20000
1912-06-01 4.20000
1912-07-01 4.10000
1912-08-01 3.00000
1912-09-01 3.00000
1912-10-01 3.10000
1912-11-01 2.90000
1912-12-01 4.20000
1913-01-01 5.80000
1913-02-01 4.60000
1913-03-01 4.30000
1913-04-01 3.50000
1913-05-01 3.40000
1913-06-01 3.30000
1913-07-01 3.30000
1913-08-01 2.70000
1913-09-01 3.40000
1913-10-01 3.20000
1913-11-01 3.50000
1913-12-01 4.80000
1914-01-01 5.90000
1914-02-01 5.20000
1914-03-01 4.30000
1914-04-01 3.40000
1914-05-01 2.70000
1914-06-01 2.90000
1914-07-01 3.10000
1914-08-01 7.40000
1914-09-01 5.60000
1914-10-01 3.00000
1914-11-01 1.80000
1914-12-01 2.00000
1915-01-01 2.10000
1915-02-01 2.60000
1915-03-01 2.60000
1915-04-01 2.80000
1915-05-01 3.20000
1915-06-01 2.70000
1915-07-01 2.80000
1915-08-01 2.40000
1915-09-01 2.00000
1915-10-01 1.60000
1915-11-01 1.10000
1915-12-01 1.60000
1916-01-01 1.60000
1916-02-01 1.50000
1916-03-01 1.40000
1916-04-01 0.900000
1916-05-01 1.20000
1916-06-01 0.900000
1916-07-01 0.900000
1916-08-01 0.800000
1916-09-01 0.900000
1916-10-01 0.600000
1916-11-01 0.500000
1916-12-01 0.400000
1917-01-01 0.400000
1917-02-01 0.400000
1917-03-01 0.500000
1917-04-01 0.500000
1917-05-01 0.700000
1917-06-01 1.10000
1917-07-01 1.10000
1917-08-01 0.900000
1917-09-01 0.500000
1917-10-01 0.300000
1917-11-01 0.300000
1917-12-01 0.300000
1918-01-01 0.300000
1918-02-01 0.300000
1918-03-01 0.200000
1918-04-01 0.200000
1918-05-01 0.200000
1918-06-01 0.200000
1918-07-01 0.100000
1918-08-01 0.100000
1918-09-01 0.400000
1918-10-01 0.200000
1918-11-01 0.300000
1918-12-01 0.900000
1919-01-01 2.40000
1919-02-01 2.50000
1919-03-01 2.50000
1919-04-01 1.40000
1919-05-01 1.00000
1919-06-01 1.00000
1919-07-01 1.30000
1919-08-01 1.10000
1919-09-01 0.500000
1919-10-01 0.700000
1919-11-01 0.500000
1919-12-01 0.500000
1920-01-01 0.300000
1920-02-01 0.200000
1920-03-01 0.100000
1920-04-01 0.200000
1920-05-01 0.200000
1920-06-01 0.400000
1920-07-01 0.400000
1920-08-01 0.300000
1920-09-01 0.400000
1920-10-01 0.800000
1920-11-01 0.600000
1920-12-01 0.800000
1921-01-01 2.00000
1921-02-01 3.60000
1921-03-01 3.60000
1921-04-01 5.10000
1921-05-01 7.30000
1921-06-01 6.70000
1921-07-01 7.20000
1921-08-01 5.70000
1921-09-01 3.90000
1921-10-01 3.80000
1921-11-01 4.20000
1921-12-01 4.30000