Year	Per 100 People
1990	2.6
1991	3.01
1992	3.51
1993	4
1994	4.3
1995	5.48
1996	6.66
1997	7.33
1998	7.99
1999	9.14
2000	10.27
2001	11.77
2002	13.49
2003	13.46
2004	13.43
2005	15.31
2006	16.3