Year	Per 100 People
1990	2.8
1991	3.3
1992	3.79
1993	4.28
1994	4.77
1995	6.01
1996	7.75
1997	9.47
1998	10.69
1999	11.87
2000	17.19
2001	21.89
2002	19.16
2003	22.18
2004	25.69
2005	27.87
2006	36.88