Year	per person
1971	153.5
1972	158.7
1973	141.9
1974	132.1
1975	170.1
1976	184.2
1977	188.6
1978	216.1
1979	239.7
1980	257.8
1981	256.5
1982	285.2
1983	290.6
1984	303.9
1985	314.1
1986	325.3
1987	340.8
1988	348.3
1989	371.9
1990	382.5
1991	387.9
1992	350.4
1993	378.7
1994	396.1
1995	403.3
1996	398.9
1997	391.2
1998	315.6
1999	297.2
2000	280.5
2001	358.7
2002	351.3
2003	364
2004	373.3
2005	378.5
2006	387.8
2007	398.4
2008	404.6