Year	per person
1971	519.8
1972	501.9
1973	482.3
1974	470.3
1975	454.6
1976	439.4
1977	424.7
1978	410.5
1979	396.9
1980	529.2
1981	700.2
1982	812.3
1983	946.1
1984	1005
1985	994.7
1986	975.2
1987	1266
1988	1288
1989	1289
1990	1294
1991	1279
1992	1312
1993	1378
1994	1451
1995	1553
1996	1588
1997	1710
1998	1603
1999	1520
2000	1555
2001	1391
2002	1109
2003	1271
2004	1295
2005	1058
2006	817.1
2007	874.6
2008	3067