Year	per person
1971	166.4
1972	183.6
1973	202.1
1974	214
1975	233.4
1976	261.4
1977	299.4
1978	355.3
1979	387.8
1980	437.5
1981	525.6
1982	569.8
1983	650.5
1984	713.8
1985	680
1986	699.1
1987	715.3
1988	713.6
1989	695.8
1990	712.8
1991	702.9
1992	765.6
1993	797.1
1994	779.1
1995	868.5
1996	886.4
1997	885.8
1998	970.7
1999	1024
2000	1110
2001	1158
2002	1199
2003	1382
2004	1339
2005	1483
2006	1584
2007	2176
2008	2261