Year	Cases per 100,000
1990	70.53
1991	57.33
1992	83.16
1993	76.01
1994	87.05
1995	87.53
1996	74.84
1997	57.65
1998	53.33
1999	64.99
2000	57.17
2001	85.07
2002	71.76
2003	81.97
2004	81.58
2005	80.86
2006	77.61