Year	per person
1980	17.39
1981	17.4
1982	18.35
1983	19.03
1984	21.11
1985	23.45
1986	25.77
1987	28.51
1988	30.48
1989	38.87
1990	34.25
1991	34.85
1992	36.34
1993	43.25
1994	54.66
1995	69.21
1996	83.79
1997	97.09
1998	116.8
1999	126.2
2000	141
2001	160.2
2002	180
2003	195.5
2004	220.5
2005	233.1
2006	256.5
2007	275.4
2008	302.7