Year	per person
1800	1.105
1820	1.105
1945	3.869
1946	3.858
1947	3.88
1948	3.875
1949	3.873
1950	3.891
1951	3.884
1952	4.036
1953	3.84
1954	4.081
1955	3.847
1956	4.104
1957	3.787
1958	4.008
1959	3.744
1960	3.906
1961	3.671
1962	3.94
1963	3.606
1964	3.449
1965	3.413
1966	3.321
1967	3.184
1968	3.24
1969	3.275
1970	3.357
1971	3.538
1972	3.628
1973	3.756
1974	3.956
1975	3.831
1976	4.125
1977	4.11
1978	4.271
1979	4.543
1980	4.853
1981	4.647
1982	4.41
1983	4.361
1984	4.287
1985	4.207
1986	4.115
1987	3.998
1988	3.944
1989	3.903
1990	3.822
1991	3.764
1992	3.194
1993	3.067
1994	2.763
1995	2.85
1996	2.915
1997	2.942
1998	2.954
1999	2.979
2000	2.948
2001	2.859
2002	2.786
2003	2.741
2004	2.588
2005	2.577
2006	2.587
2007	2.625
2008	2.599
2009	2.627