Year	Cases per 100,000
1990	15.68
1991	15.83
1992	15.99
1993	16.15
1994	16.31
1995	16.48
1996	16.9
1997	17.33
1998	17.78
1999	18.24
2000	18.72
2001	19.27
2002	19.83
2003	20.41
2004	21.01
2005	21.64
2006	22.08
2007	22.53
2008	23
2009	23.48
2010	23.97
2011	24.39
2012	24.82
2013	25.26
2014	25.71
2015	26.17
2016	26.64