Year	per person
1981	31.04
1982	34.01
1983	34.78
1984	38.37
1985	38.94
1986	38.57
1987	37.36
1988	48.82
1989	58.75
1990	62.53
1991	67.61
1992	72.26
1993	89.5
1994	104.4
1995	110.5
1996	115.7
1997	123.7
1998	111.2
1999	119.6
2000	128.2
2001	206.1
2002	225.1
2003	251.8
2004	327.7
2005	345.2
2006	349.5
2007	416.1
2008	454.8