Year	Cases per 100,000
1990	13.67
1991	14.05
1992	14.46
1993	14.88
1994	15.31
1995	15.77
1996	16.33
1997	16.92
1998	17.53
1999	18.17
2000	18.83
2001	19.05
2002	19.28
2003	19.52
2004	19.76
2005	20.01
2006	20.18
2007	20.36
2008	20.54
2009	20.73
2010	20.92
2011	21.14
2012	21.37
2013	21.6
2014	21.84
2015	22.08
2016	22.33