Year	Cases per 100,000
1990	50.69
1991	50.51
1992	50.34
1993	50.19
1994	50.03
1995	49.89
1996	49.24
1997	48.61
1998	48
1999	47.4
2000	46.83
2001	46.49
2002	46.17
2003	45.86
2004	45.56
2005	45.28
2006	44.8
2007	44.32
2008	43.85
2009	43.4
2010	42.96
2011	42.82
2012	42.69
2013	42.57
2014	42.44
2015	42.32
2016	42.21