Year	per person
1800	2.869
1820	2.869
1913	3.879
1973	8.043
1974	7.121
1975	6.794
1976	7.371
1977	7.262
1978	7.668
1979	8.637
1980	8.08
1981	7.331
1982	7.241
1983	7.259
1984	7.337
1985	7.601
1986	7.988
1987	7.988
1988	7.828
1989	8.067
1990	7.658
1991	7.428
1992	7.356
1993	7.595
1994	7.335
1995	7.74
1996	8.215
1997	8.189
1998	8.29
1999	8.454
2000	8.971
2001	9.619
2002	9.728
2003	9.967
2004	10.23
2005	10.68
2006	10.88
2007	11.08
2008	11.58
2009	10.97