Year	Cases per 100,000
1990	89.01
1991	91.34
1992	89.85
1993	87.64
1994	87.57
1995	89.7
1996	87.44
1997	87.67
1998	87.42
1999	90.6
2000	88.16
2001	86.4
2002	85
2003	83.86
2004	83.61
2005	82.43
2006	81.31
2007	80.32
2008	78.58
2009	76.85
2010	75.14
2011	73.21
2012	72.58
2013	70.53
2014	67.01
2015	64.88
2016	63.06