Year	Cases per 100,000
1990	31.7
1991	32.53
1992	33.4
1993	34.31
1994	35.25
1995	36.24
1996	37.18
1997	38.17
1998	39.18
1999	40.24
2000	41.34
2001	41.6
2002	41.88
2003	42.15
2004	42.43
2005	42.72
2006	40.91
2007	39.2
2008	37.6
2009	36.09
2010	34.67
2011	34.86
2012	35.06
2013	35.26
2014	35.47
2015	35.67
2016	35.89