Year	Cases per 100,000
1990	55.52
1991	54.93
1992	54.07
1993	56.63
1994	56.98
1995	57.2
1996	57.53
1997	57.59
1998	57.46
1999	57.3
2000	57.11
2001	56.94
2002	56.66
2003	56.46
2004	56.12
2005	55.7
2006	55.21
2007	54.62
2008	53.91
2009	53.59
2010	53.05
2011	52.53
2012	51.9
2013	51.86
2014	51.64
2015	51.34
2016	51.21