Year	Cases per 100,000
1990	47.06
1991	49.04
1992	51.19
1993	53.51
1994	56.02
1995	58.74
1996	56.72
1997	54.86
1998	53.13
1999	51.53
2000	50.06
2001	51.36
2002	52.72
2003	54.15
2004	55.65
2005	57.23
2006	57.7
2007	58.18
2008	58.69
2009	59.22
2010	59.78
2011	58.45
2012	57.17
2013	55.94
2014	54.76
2015	53.62
2016	52.54