Year	per person
1971	47.63
1972	49.92
1973	52.97
1974	64.75
1975	68.25
1976	74.82
1977	87.08
1978	91.24
1979	105.2
1980	62.03
1981	67.76
1982	71.96
1983	74.31
1984	74.02
1985	80.97
1986	80.47
1987	85.1
1988	89.74
1989	93.69
1990	104.8
1991	109.5
1992	110.7
1993	120.5
1994	113.1
1995	141.4
1996	152.1
1997	167.7
1998	184
1999	190
2000	209.6
2001	219.4
2002	224.2
2003	225.1
2004	236.6
2005	246
2006	246.7
2007	275.7
2008	278.7