Year	Cases per 100,000
1990	48.2
1991	74.4
1992	80.7
1993	87
1994	88.4
1995	90.5
1996	87.1
1997	86.4
1998	85.7
1999	82.5
2000	83.8
2001	85.7
2002	88.8
2003	87.8
2004	82.4
2005	76.4
2006	69.7
2007	63.8