Year	Per 100 People
1991	14.55
1992	16.27
1993	18.94
1994	22.99
1995	27.37
1996	31.73
1997	35.98
1998	40.49
1999	44.7
2000	48.87
2001	50.79
2002	52.83
2003	54.97
2004	57.2
2005	59.41
2006	63.13