Year	per person
1800	0.9947
1820	0.9947
1850	1.02
1870	1.54
1871	1.496
1872	1.419
1873	1.426
1874	1.401
1875	1.412
1876	1.427
1877	1.435
1878	1.298
1879	1.392
1880	1.502
1881	1.604
1882	1.692
1883	1.703
1884	1.636
1885	1.524
1886	1.466
1887	1.71
1888	1.666
1889	1.631
1890	1.891
1891	1.875
1892	1.903
1893	1.904
1894	1.887
1895	1.963
1896	1.968
1897	2.035
1898	2.113
1899	2.232
1900	2.334
1901	2.156
1902	2.126
1903	2.217
1904	2.198
1905	2.133
1906	2.154
1907	2.231
1908	2.209
1909	2.086
1910	2.185
1911	2.099
1912	2.092
1913	2.233
1914	2.189
1915	2.056
1916	2.121
1917	2.203
1918	2.003
1919	2.11
1920	1.975
1921	1.916
1922	1.965
1923	1.928
1924	2.04
1925	2.147
1926	2.291
1927	2.282
1928	2.274
1929	2.416
1930	2.289
1931	2.176
1932	2.064
1933	2.08
1934	2.279
1935	2.142
1936	2.125
1937	2.255
1938	2.217
1939	2.146
1940	2.263
1941	2.309
1942	2.393
1943	2.323
1944	2.088
1945	2.018
1946	1.9
1947	1.942
1948	2.097
1949	2.169
1950	2.266
1951	2.339
1952	2.376
1953	2.352
1954	2.348
1955	2.422
1956	2.378
1957	2.352
1958	2.36
1959	2.331
1960	2.351
1961	2.335
1962	2.356
1963	2.345
1964	2.4
1965	2.418
1966	2.335
1967	2.49
1968	2.615
1969	2.66
1970	2.73
1971	2.655
1972	2.661
1973	2.721
1974	2.767
1975	2.787
1976	2.823
1977	2.958
1978	3.087
1979	3.226
1980	3.345
1981	3.498
1982	3.614
1983	3.749
1984	3.885
1985	3.995
1986	4.136
1987	4.116
1988	4.164
1989	4.215
1990	4.429
1991	4.579
1992	4.723
1993	4.981
1994	5.188
1995	5.405
1996	5.548
1997	5.843
1998	6.058
1999	6.258
2000	6.574
2001	6.416
2002	6.613
2003	6.944
2004	7.259
2005	7.634
2006	8.155
2007	8.642
2008	9.084
2009	9.329