Year	per person
1980	10.73
1981	12.46
1982	14.91
1983	15.7
1984	17.8
1985	22.87
1986	26.22
1987	26.57
1988	32.96
1989	41.22
1990	48.82
1991	55.74
1992	62.1
1993	67.85
1994	73.23
1995	77.2
1996	74.46
1997	78.05
1998	80.92
1999	81.59
2000	84.8
2001	88.52
2002	94.45
2003	100.8
2004	104.5
2005	96.51
2006	115.7
2007	122.7
2008	130.1