Year	per person
1971	29.74
1972	34.04
1973	34.07
1974	35.14
1975	35.63
1976	37.53
1977	40.83
1978	44.58
1979	47.17
1980	51.22
1981	52.71
1982	60.56
1983	64.23
1984	63.36
1985	67.95
1986	69.37
1987	75.92
1988	80.38
1989	82.39
1990	86.95
1991	96.12
1992	104.4
1993	106.8
1994	116.3
1995	120.7
1996	122.5
1997	126.5
1998	132.4
1999	133.6
2000	137.6
2001	128.4
2002	135.1
2003	146.8
2004	155.6
2005	170
2006	184.4
2007	194
2008	209.1