Year	per person
1800	1.157
1820	1.157
1913	2.134
1970	7.236
1971	6.408
1972	6.313
1973	6.573
1974	7.133
1975	7.387
1976	7.313
1977	7.411
1978	7.928
1979	8.746
1980	9.78
1981	9.57
1982	9.454
1983	9.616
1984	9.723
1985	9.426
1986	9.346
1987	10.23
1988	10.88
1989	11.35
1990	15.01
1991	19.85
1992	26.48
1993	35.93
1994	46.99
1995	62.06
1996	67.52
1997	72.96
1998	78.75
1999	84.5
2000	94.26
2001	96.23
2002	91.5
2003	83.8
2004	91.46
2005	98.6
2006	99.85
2007	100.4
2008	101.8