Year	per person
1800	3.657
1820	3.657
1913	6.748
1950	33.39
1960	57.41
1961	58.64
1962	59.81
1963	59.06
1964	64.01
1965	65.45
1966	73.53
1967	81.69
1968	81.84
1969	83.08
1970	86.72
1971	88.8
1972	89.53
1973	89.95
1974	89.93
1975	92.55
1976	97.29
1977	98.05
1978	99.6
1979	106.9
1980	108.9
1981	102.4
1982	103.8
1983	103.7
1984	100.1
1985	106.1
1986	109.3
1987	113
1988	112.7
1989	111.9
1990	107.3
1991	108.3
1992	103.3
1993	107.6
1994	107.7
1995	114.6
1996	117.4
1997	121.3
1998	124.9
1999	128.6
2000	131.9
2001	131.4
2002	139.2
2003	142.7
2004	147.1
2005	153.3
2006	161.3
2007	168.3
2008	175.3