Year	Per 100 People
1990	10.92
1991	12.65
1992	14.71
1993	16.76
1994	17.22
1995	20.46
1996	21.95
1997	24.28
1998	27.29
1999	30.79
2000	34.41
2001	37.37
2002	40.58
2003	44.06
2004	60.34
2005	76.52
2006	81.21