Year	Cases per 100,000
1990	28.17
1991	28.26
1992	28.37
1993	28.48
1994	28.59
1995	28.71
1996	29.19
1997	29.68
1998	30.19
1999	30.72
2000	31.27
2001	31.49
2002	31.72
2003	31.95
2004	32.19
2005	32.44
2006	32.79
2007	33.14
2008	33.5
2009	33.87
2010	34.24
2011	34.6
2012	34.97
2013	35.35
2014	35.73
2015	36.11
2016	36.5