Year	Percent
1871	8.61000
1872	8.62000
1873	9.52000
1874	10.0200
1875	8.15000
1876	6.91000
1877	9.55000
1878	9.22000
1879	9.13000
1880	9.42000
1881	7.11000
1882	7.25000
1883	7.04000
1884	6.48000
1885	5.87000
1886	6.14000
1887	6.54000
1888	5.01000
1889	5.58000
1890	5.42000
1891	6.68000
1892	6.59000
1893	5.53000
1894	3.70000
1895	5.41000
1896	4.98000
1897	6.88000
1898	6.90000
1899	7.66000
1900	7.74000
1901	6.35000
1902	7.48000
1903	7.42000
1904	6.91000
1905	7.47000
1906	7.91000
1907	8.46000
1908	7.43000
1909	7.87000
1910	7.78000
1911	6.40000
1912	7.37000
1913	7.44000
1914	6.41000
1915	10.5700
1916	16.1700
1917	15.1100
1918	13.1500
1919	10.6300
1920	10.0800
1921	4.22000
1922	8.25000
1923	11.3800
1924	10.2700
1925	11.1900
1926	10.0500
1927	7.57000
1928	7.30000
1929	6.23000
1930	4.74000
1931	2.97000
1932	0.720000
1933	3.38000
1934	3.89000
1935	5.20000
1936	5.86000
1937	6.19000
1938	3.86000