Year	Cases per 100,000
1990	29.7
1991	35.6
1992	39.6
1993	43.2
1994	46.2
1995	48.9
1996	50.9
1997	53.6
1998	56.5
1999	59.7
2000	63.3
2001	66.6
2002	69.1
2003	70.1
2004	69
2005	66.5
2006	63.8
2007	61