Year	per person
1800	1.819
1820	1.819
1913	2.459
1973	5.005
1974	6.519
1975	6.024
1976	5.951
1977	5.714
1978	6.519
1979	6.579
1980	5.668
1981	5.755
1982	6.217
1983	7.367
1984	7.692
1985	7.597
1986	7.27
1987	7.13
1988	6.999
1989	7.056
1990	7.196
1991	7.84
1992	7.551
1993	7.658
1994	7.636
1995	7.797
1996	8.179
1997	8.422
1998	8.632
1999	8.204
2000	8.25
2001	7.841
2002	7.093
2003	7.129
2004	7.326
2005	7.625
2006	7.966
2007	8.287
2008	8.589
2009	8.648