Year	Cases per 100,000
1990	18.76
1991	19.47
1992	20.22
1993	21
1994	21.81
1995	22.66
1996	22.5
1997	22.35
1998	22.21
1999	22.08
2000	21.95
2001	22.47
2002	23.01
2003	23.56
2004	24.13
2005	24.72
2006	25.39
2007	26.08
2008	26.79
2009	27.52
2010	28.29
2011	28.52
2012	28.76
2013	29
2014	29.25
2015	29.49
2016	29.75