Year	Per 100 People
1990	0.42
1991	0.54
1992	0.8
1993	1
1994	1.18
1995	1.39
1996	1.69
1997	2.01
1998	2.16
1999	2.27
2000	2.79
2001	3.23
2002	3.93
2003	4.79
2004	5.83
2005	6.86