Year	Cases per 100,000
1990	17.11
1991	17.29
1992	17.58
1993	18.03
1994	18.43
1995	19.03
1996	19.76
1997	21.07
1998	21.91
1999	23
2000	23.86
2001	24.44
2002	24.93
2003	25.42
2004	25.7
2005	26.2
2006	26.22
2007	26.16
2008	26.35
2009	26.53
2010	26.59
2011	26.57
2012	26.55
2013	26.69
2014	26.67
2015	26.44
2016	26.25