Year	Cases per 100,000
1990	81.13
1991	80.4
1992	79.7
1993	79.01
1994	78.34
1995	77.68
1996	77.89
1997	78.14
1998	78.42
1999	78.73
2000	79.07
2001	78.57
2002	78.09
2003	77.63
2004	77.18
2005	76.76
2006	75.28
2007	73.9
2008	72.64
2009	71.47
2010	70.39
2011	69.98
2012	69.58
2013	69.18
2014	68.79
2015	68.4
2016	68.03