Year	Cases per 100,000
1990	53.33
1991	51.92
1992	50.58
1993	49.3
1994	48.08
1995	46.91
1996	45.38
1997	43.95
1998	42.63
1999	41.39
2000	40.24
2001	40.14
2002	40.06
2003	39.98
2004	39.91
2005	39.85
2006	40.96
2007	42.12
2008	43.35
2009	44.63
2010	45.99
2011	46.48
2012	47
2013	47.53
2014	48.06
2015	48.61
2016	49.18