Year	Per 100 People
1991	0.22
1992	0.24
1993	0.28
1994	0.3
1995	0.33
1996	0.37
1997	0.38
1998	0.75
1999	1.23
2000	1.68
2001	2
2002	2.19
2003	2.26
2004	2.33
2005	2.4