Year	Per 100 People
1990	0.81
1991	1.05
1992	1.48
1993	1.79
1994	2.31
1995	2.59
1996	3.08
1997	3.35
1998	3.6
1999	4.36
2000	5.69
2001	6.8
2002	8.11
2003	9.58
2004	10.61
2005	13.08
2006	13.85