Year	per person
1800	1.127
1820	1.138
1850	1.184
1870	1.217
1871	1.2
1872	1.185
1873	1.196
1874	1.211
1875	1.22
1876	1.245
1877	1.248
1878	1.22
1879	1.234
1880	1.23
1881	1.292
1882	1.244
1883	1.216
1884	1.305
1885	1.304
1886	1.283
1887	1.284
1888	1.273
1889	1.261
1890	1.215
1891	1.237
1892	1.272
1893	1.297
1894	1.302
1895	1.291
1896	1.285
1897	1.285
1898	1.276
1899	1.325
1900	1.351
1901	1.318
1902	1.279
1903	1.334
1904	1.337
1905	1.338
1906	1.359
1907	1.377
1908	1.362
1909	1.411
1910	1.478
1911	1.529
1912	1.537
1913	1.588
1914	1.57
1915	1.573
1916	1.569
1917	1.555
1918	1.585
1919	1.709
1920	1.641
1921	1.626
1922	1.651
1923	1.664
1924	1.728
1925	1.741
1926	1.82
1927	1.91
1928	1.955
1929	1.982
1930	1.983
1931	1.805
1932	1.772
1933	1.758
1934	1.765
1935	1.822
1936	1.932
1937	2.053
1938	2.083
1939	2.082
1940	2.231
1941	2.222
1942	1.631
1943	1.446
1944	1.152
1945	1.014
1946	1.046
1947	1.156
1948	1.341
1949	1.461
1950	1.545
1951	1.632
1952	1.644
1953	1.691
1954	1.771
1955	1.806
1956	1.765
1957	1.884
1958	1.738
1959	1.791
1960	1.831
1961	1.885
1962	1.862
1963	1.75
1964	1.775
1965	1.76
1966	1.741
1967	1.672
1968	1.814
1969	1.998
1970	2.164
1971	2.244
1972	2.437
1973	2.729
1974	2.768
1975	2.696
1976	2.883
1977	3.032
1978	3.11
1979	3.193
1980	3.397
1981	3.527
1982	3.326
1983	3.363
1984	3.529
1985	3.552
1986	3.707
1987	3.834
1988	3.996
1989	4.289
1990	4.6
1991	4.773
1992	5.226
1993	5.525
1994	5.865
1995	6.254
1996	6.638
1997	6.841
1998	5.825
1999	5.761
2000	5.954
2001	6.113
2002	6.302
2003	6.545
2004	6.789
2005	7.092
2006	7.385
2007	7.753
2008	8.113
2009	8.373