Year	Cases per 100,000
1990	46.18
1991	45.9
1992	46.31
1993	46.47
1994	47.14
1995	47.45
1996	47.18
1997	47.24
1998	47.47
1999	47.08
2000	46.27
2001	44.87
2002	43.71
2003	43.55
2004	42.93
2005	42.44
2006	41.61
2007	41.29
2008	40.82
2009	40.57
2010	40.02
2011	39.56
2012	39.27
2013	39.26
2014	39.07
2015	38.76
2016	38.37