Year	Cases per 100,000
1990	35.37
1991	35.18
1992	35.44
1993	35.73
1994	36.68
1995	36.91
1996	36.56
1997	38.37
1998	41.38
1999	46.02
2000	50.53
2001	54.94
2002	59.26
2003	63.26
2004	66.05
2005	67.68
2006	63.53
2007	60.85
2008	59.33
2009	58.11
2010	57.06
2011	55.41
2012	54.2
2013	53.57
2014	52.87
2015	52.07
2016	51.38