Year	per person
1971	320.6
1972	300.8
1973	307.4
1974	292.5
1975	306.2
1976	326.2
1977	348.1
1978	370.4
1979	364.6
1980	398.7
1981	440.5
1982	460.5
1983	470.7
1984	461.3
1985	469.5
1986	479.4
1987	518
1988	558.6
1989	504.9
1990	512.7
1991	565.7
1992	605.6
1993	679.1
1994	691.9
1995	720.7
1996	740.3
1997	754.4
1998	789.5
1999	841.8
2000	871.1
2001	864.7
2002	831.8
2003	772
2004	773
2005	789.1
2006	792.7
2007	846.3
2008	823.8