Year	Cases per 100,000
1990	29.94
1991	31.05
1992	32.49
1993	33.63
1994	35.06
1995	36.51
1996	37.21
1997	37.77
1998	38.75
1999	39.69
2000	40.35
2001	40.7
2002	41.01
2003	40.95
2004	40.75
2005	40.24
2006	38.72
2007	37.55
2008	36.12
2009	34.78
2010	33.61
2011	33.18
2012	32.67
2013	32.55
2014	32.39
2015	32.25
2016	32.13