Year	Cases per 100,000
1990	29.49
1991	30.62
1992	31.98
1993	33.35
1994	35.09
1995	37.14
1996	39.19
1997	41.6
1998	44.52
1999	45.75
2000	47.52
2001	48.75
2002	49.35
2003	50.19
2004	51.52
2005	52.77
2006	52.6
2007	52.9
2008	52.78
2009	52.47
2010	52.61
2011	52.71
2012	52.44
2013	52.18
2014	52.08
2015	51.81
2016	51.45