Year	per person
1800	1.194
1820	1.194
1913	1.208
1950	1.214
1951	1.254
1952	1.262
1953	1.281
1954	1.32
1955	1.33
1956	1.346
1957	1.362
1958	1.365
1959	1.408
1960	1.415
1961	1.411
1962	1.391
1963	1.386
1964	1.416
1965	1.401
1966	1.62
1967	1.565
1968	1.593
1969	1.659
1970	1.716
1971	1.748
1972	1.761
1973	1.666
1974	1.735
1975	1.436
1976	1.454
1977	1.404
1978	1.421
1979	1.444
1980	1.337
1981	1.329
1982	1.255
1983	1.21
1984	1.165
1985	1.115
1986	1.114
1987	1.11
1988	1.077
1989	1.057
1990	1.22
1991	1.445
1992	1.396
1993	1.373
1994	1.414
1995	1.452
1996	1.444
1997	1.336
1998	1.209
1999	1.162
2000	1.139
2001	1.131
2002	1.166
2003	0.8023
2004	0.8239
2005	0.8399
2006	0.8706
2007	0.9092
2008	1.044
2009	1.041