Year	per person
1995	6.205
1996	10.57
1997	13.41
1998	15.4
1999	13.48
2000	17.09
2001	18.83
2002	20.35
2003	20.44
2004	24.41
2005	28.02
2006	34.08
2007	43.38
2008	51.58