Year	Per 100 People
1990	8.54
1991	10.22
1992	11.6
1993	13.5
1994	15.64
1995	18.29
1996	20.89
1997	23.98
1998	27.25
1999	31.47
2000	35.78
2001	38.83
2002	42.06
2003	45.52
2004	49.29
2005	52.99
2006	58.91