Year	per person
1975	34.22
1976	34.96
1977	37.91
1978	52.82
1979	49.71
1980	57.67
1981	65.61
1982	67.15
1983	72.98
1984	75.03
1985	78.25
1986	60.3
1987	78.36
1988	83.18
1989	82.18
1990	87.22
1991	95
1992	90.11
1993	92.83
1994	103.9
1995	114.7
1996	124.7
1997	139.7
1998	155.9
1999	152
2000	161.7
2001	166.5
2002	165.3
2003	181.5
2004	184.6
2005	182.5
2006	177
2007	179.8
2008	179.6