Year	Cases per 100,000
1990	29.85
1991	30.15
1992	30.45
1993	30.75
1994	31.06
1995	31.37
1996	31.68
1997	31.99
1998	32.31
1999	32.63
2000	32.96
2001	31.05
2002	29.28
2003	27.62
2004	26.07
2005	24.63
2006	24.37
2007	24.11
2008	23.87
2009	23.62
2010	23.39
2011	23.63
2012	23.88
2013	24.14
2014	24.4
2015	24.67
2016	24.95