Year	Cases per 100,000
1990	44.4
1991	44.06
1992	46.71
1993	45.46
1994	46.05
1995	41.83
1996	40.22
1997	38.88
1998	38.37
1999	38.33
2000	37.3
2001	35.79
2002	35.61
2003	36.18
2004	35.57
2005	35.3
2006	35.3
2007	35.28
2008	35.86
2009	35.17
2010	34.94
2011	32.75
2012	31.5
2013	30.7
2014	30.06
2015	29.62
2016	29.23