Year	Cases per 100,000
1990	59.6
1991	60.19
1992	60.27
1993	60.46
1994	59.76
1995	59.4
1996	58.41
1997	57.72
1998	58.13
1999	57.77
2000	57.65
2001	56.34
2002	55.59
2003	54.26
2004	53.46
2005	52.41
2006	51.62
2007	51.13
2008	50.43
2009	50.34
2010	48.64
2011	47.97
2012	46.67
2013	45.85
2014	45.24
2015	45.41
2016	45.58