Year	per person
1971	110.5
1972	127.4
1973	126.4
1974	138.7
1975	161
1976	155.3
1977	170.8
1978	163.6
1979	168.4
1980	174.1
1981	182
1982	191.8
1983	196.5
1984	192.2
1985	192.9
1986	200.5
1987	213
1988	206.9
1989	194.3
1990	198.3
1991	221.2
1992	193.3
1993	199
1994	202.9
1995	206.9
1996	221.9
1997	229.3
1998	186.2
1999	184.9
2000	193.8
2001	200.1
2002	209.6
2003	217.2
2004	232.8
2005	250.9
2006	278.4
2007	223
2008	239.4