Year	Cases per 100,000
1990	16.99
1991	17.28
1992	17.59
1993	17.9
1994	18.22
1995	18.55
1996	18.85
1997	19.17
1998	19.5
1999	19.83
2000	20.17
2001	20.49
2002	20.82
2003	21.16
2004	21.5
2005	21.85
2006	22.1
2007	22.36
2008	22.62
2009	22.88
2010	23.16
2011	23.27
2012	23.39
2013	23.51
2014	23.63
2015	23.75
2016	23.88