Year	Cases per 100,000
1990	237.8
1991	215
1992	103.6
1993	59.3
1994	63.51
1995	74.15
1996	83.65
1997	97.35
1998	93.13
1999	79.73
2000	121.9
2001	118.6
2002	116.4
2003	123
2004	177.7
2005	168.6
2006	136.3