Year	Cases per 100,000
1990	15.11
1991	15.68
1992	16.28
1993	16.9
1994	17.55
1995	18.23
1996	18.26
1997	18.29
1998	18.33
1999	18.37
2000	18.41
2001	18.84
2002	19.28
2003	19.74
2004	20.21
2005	20.7
2006	21.37
2007	22.06
2008	22.78
2009	23.54
2010	24.33
2011	24.9
2012	25.49
2013	26.1
2014	26.72
2015	27.36
2016	28.02