Year	per person
1971	296.3
1972	311.2
1973	332.8
1974	345.4
1975	342.6
1976	359.2
1977	376.2
1978	382.3
1979	419.8
1980	480.4
1981	485.8
1982	509
1983	523
1984	542.3
1985	573.3
1986	591.9
1987	618.3
1988	634.8
1989	685.2
1990	699
1991	720
1992	698
1993	777.2
1994	840
1995	932.4
1996	1015
1997	1023
1998	1038
1999	1051
2000	1004
2001	966.4
2002	953.4
2003	930.5
2004	888.3
2005	865.7
2006	841.6
2007	844.9
2008	830.7