Year	per person
1971	77.93
1972	81.23
1973	85.31
1974	88.63
1975	86.74
1976	88.23
1977	82.25
1978	79.7
1979	78.11
1980	76.68
1981	79.54
1982	76.89
1983	74.18
1984	70.25
1985	66.83
1986	70.93
1987	73.72
1988	93.06
1989	63.98
1990	73.05
1991	73.4
1992	73.39
1993	86.13
1994	93.31
1995	111.4
1996	114.5
1997	119.7
1998	109.6
1999	110.4
2000	113
2001	117.3
2002	122.9
2003	127.6
2004	132.5
2005	136.3
2006	144.3
2007	168.9
2008	168.6