Year	Cases per 100,000
1990	864.2
1991	652.1
1992	618.2
1993	988.7
1994	909.6
1995	1489
1996	1588
1997	882
1998	685.8
1999	769.2
2000	470.1
2001	202.2
2002	146.4
2003	126.1
2004	127.9
2005	121.6
2006	56.29