Year	Cases per 100,000
1990	31.11
1991	31.91
1992	32.75
1993	33.61
1994	34.5
1995	35.43
1996	35.26
1997	35.11
1998	34.98
1999	34.85
2000	34.73
2001	34
2002	33.29
2003	32.6
2004	31.93
2005	31.28
2006	30.38
2007	29.5
2008	28.66
2009	27.85
2010	27.06
2011	26.84
2012	26.61
2013	26.4
2014	26.18
2015	25.97
2016	25.77