Year	Cases per 100,000
1990	14.29
1991	14.53
1992	14.79
1993	15.05
1994	15.31
1995	15.57
1996	15.91
1997	16.25
1998	16.6
1999	16.95
2000	17.32
2001	17.61
2002	17.92
2003	18.23
2004	18.56
2005	18.89
2006	19.29
2007	19.68
2008	20.09
2009	20.51
2010	20.95
2011	21.46
2012	21.99
2013	22.54
2014	23.1
2015	23.68
2016	24.29