Year	Per 100 People
1990	2.32
1991	2.42
1992	2.42
1993	2.42
1994	2.96
1995	3.48
1996	3.91
1997	4.31
1998	4.93
1999	5.74
2000	6.05
2001	10.41
2002	10.57
2003	11.15
2004	11.69
2005	12.82
2006	13.89