Year	per person
1975	51.04
1976	62.05
1977	67.1
1978	74.76
1979	108.3
1980	138.7
1981	155.3
1982	191.8
1983	221
1984	238.5
1985	249.3
1986	257.4
1987	267.1
1988	281.6
1989	278.3
1990	268
1991	255.4
1992	277.8
1993	299.2
1994	322.7
1995	338.5
1996	358
1997	359.7
1998	379.9
1999	379
2000	396.4
2001	409.5
2002	471.1
2003	490.5
2004	524
2005	553.1
2006	618.2
2007	663.7
2008	719.5