Year	Per 100 People
1990	8.78
1991	10.9
1992	13.02
1993	17.28
1994	22.95
1995	28.56
1996	34.11
1997	39.59
1998	42.21
1999	46.22
2000	65.57
2001	68.7
2002	71.57
2003	75.15
2004	84.33
2005	88.66
2006	88.3