Year	Cases per 100,000
1990	15.75
1991	15.9
1992	16.07
1993	16.23
1994	16.41
1995	16.59
1996	16.8
1997	17.01
1998	17.24
1999	17.46
2000	17.7
2001	17.93
2002	18.16
2003	18.41
2004	18.66
2005	18.91
2006	19.24
2007	19.57
2008	19.91
2009	20.27
2010	20.63
2011	20.87
2012	21.11
2013	21.36
2014	21.61
2015	21.87
2016	22.14