Year	Cases per 100,000
1990	27.57
1991	28.13
1992	29.04
1993	29.92
1994	31.04
1995	32.29
1996	33.11
1997	33.92
1998	34.58
1999	34.92
2000	34.91
2001	34.12
2002	33.04
2003	32.27
2004	30.68
2005	29.26
2006	30.27
2007	30.66
2008	30.94
2009	31.3
2010	30.85
2011	30.8
2012	30.92
2013	31.02
2014	31.17
2015	31.3
2016	31.46