Year	per person
1800	1.117
1820	1.182
1850	1.254
1851	1.341
1852	1.305
1853	1.224
1854	1.182
1855	1.194
1856	1.237
1857	1.324
1858	1.409
1859	1.398
1860	1.435
1861	1.422
1862	1.354
1863	1.385
1864	1.404
1865	1.509
1866	1.563
1867	1.693
1868	1.693
1869	1.693
1870	1.57
1871	1.57
1872	1.624
1873	1.576
1874	1.6
1875	1.624
1876	1.563
1877	1.52
1878	1.594
1879	1.607
1880	1.533
1881	1.545
1882	1.582
1883	1.539
1884	1.643
1885	1.526
1886	1.576
1887	1.472
1888	1.415
1889	1.435
1890	1.57
1891	1.668
1892	1.446
1893	1.231
1894	1.231
1895	1.459
1896	1.324
1897	1.305
1898	1.335
1899	1.311
1900	1.261
1901	1.422
1902	1.381
1903	1.384
1904	1.365
1905	1.387
1906	1.528
1907	1.516
1908	1.436
1909	1.547
1910	1.56
1911	1.618
1912	1.69
1913	1.707
1914	1.645
1915	1.619
1916	1.6
1917	1.719
1918	1.643
1919	1.738
1920	1.92
1921	1.917
1922	2.03
1923	2.158
1924	2.149
1925	2.105
1926	2.169
1927	2.36
1928	2.582
1929	2.554
1930	2.453
1931	2.317
1932	2.371
1933	2.538
1934	2.714
1935	2.742
1936	3.015
1937	3.093
1938	3.167
1939	3.179
1940	3.084
1941	3.166
1942	3.004
1943	3.195
1944	3.375
1945	3.408
1946	3.718
1947	3.715
1948	3.977
1949	4.175
1950	4.342
1951	4.43
1952	4.625
1953	4.706
1954	4.932
1955	5.218
1956	5.212
1957	5.455
1958	5.878
1959	6.276
1960	6.676
1961	7.049
1962	7.317
1963	7.15
1964	7.186
1965	7.151
1966	7.424
1967	7.522
1968	8.042
1969	8.573
1970	9.176
1971	9.989
1972	10.93
1973	12.19
1974	12.88
1975	13.23
1976	14.26
1977	14.61
1978	14.97
1979	15.61
1980	16.72
1981	15.63
1982	15.42
1983	14.63
1984	15.11
1985	15.98
1986	16.85
1987	17.12
1988	16.79
1989	17.02
1990	15.65
1991	15.57
1992	15.24
1993	15.76
1994	16.46
1995	16.92
1996	17.13
1997	17.45
1998	17.24
1999	17.15
2000	17.67
2001	17.59
2002	17.83
2003	17.79
2004	18.56
2005	18.85
2006	19.45
2007	20.41
2008	21.23
2009	20.99