Year	Cases per 100,000
1990	13.82
1991	14.3
1992	14.82
1993	15.36
1994	15.92
1995	16.51
1996	16.73
1997	16.96
1998	17.19
1999	17.42
2000	17.67
2001	18.21
2002	18.77
2003	19.35
2004	19.95
2005	20.57
2006	20.85
2007	21.14
2008	21.43
2009	21.74
2010	22.06
2011	22.11
2012	22.16
2013	22.21
2014	22.26
2015	22.31
2016	22.37