Year	Cases per 100,000
1990	23810
1991	28040
1992	34450
1993	39940
1994	38930
1995	29620
1996	33860
1998	34040
1999	33110
2000	34470
2001	35990
2002	34590
2003	39270
2004	36190
2005	35910
2006	40450