Year	Cases per 100,000
1990	15.01
1991	15.39
1992	15.66
1993	16.01
1994	16.54
1995	16.73
1996	17.14
1997	18.21
1998	18.63
1999	18.84
2000	19.06
2001	19.76
2002	20.62
2003	22.11
2004	22.35
2005	22.97
2006	23.36
2007	24.28
2008	24.37
2009	25.11
2010	25.89
2011	26.64
2012	27.06
2013	26.94
2014	27.49
2015	26.87
2016	26.48