Year	per person
1971	126.8
1972	136.1
1973	150.3
1974	93.2
1975	99.82
1976	107.8
1977	115.5
1978	126.7
1979	137.8
1980	146.9
1981	160.3
1982	174.7
1983	176.9
1984	178.7
1985	186.1
1986	192.3
1987	196.1
1988	205.8
1989	225.7
1990	240.2
1991	254.3
1992	273.1
1993	284.3
1994	304.3
1995	306.5
1996	301.8
1997	309.3
1998	325.5
1999	338.3
2000	361.5
2001	376.4
2002	376.1
2003	385.5
2004	389.3
2005	434.5
2006	450.3
2007	458.9
2008	431.6