Year	Cases per 100,000
1990	67.45
1991	66.83
1992	65.49
1993	63.7
1994	61.62
1995	60.75
1996	58.43
1997	57.24
1998	56.72
1999	55.32
2000	55.14
2001	54.32
2002	53.21
2003	52.53
2004	50.96
2005	49.88
2006	48.57
2007	47.99
2008	47.22
2009	46.14
2010	44.97
2011	43.79
2012	43.21
2013	42.71
2014	41.31
2015	41.15
2016	41.21