Year	Cases per 100,000
1990	0
1991	0
1992	0
1993	0
1994	5.952
1995	15.56
1996	10.92
1997	26.76
1998	37.06
1999	19.87
2000	4.575
2001	2.578
2002	1.705
2003	0.9547
2004	1.553
2005	0.232
2006	0