Year	Per 100 People
1990	3.7
1991	4.58
1992	5.45
1993	6.13
1994	7.17
1995	8.38
1996	9.23
1997	11.31
1998	13.2
1999	15.62
2000	17.85
2001	19.55
2002	22.5
2003	26.71
2004	31.28
2005	36.99