Year	Cases per 100,000
1990	52.83
1991	52.67
1992	52.4
1993	52.12
1994	51.63
1995	51.02
1996	50.18
1997	49.3
1998	48.41
1999	47.46
2000	46.57
2001	45.89
2002	45.33
2003	44.88
2004	44.54
2005	44.27
2006	43.77
2007	43.31
2008	42.87
2009	42.43
2010	42.02
2011	41.51
2012	41.05
2013	40.62
2014	40.22
2015	39.84
2016	39.46