Year	Cases per 100,000
1990	29.61
1991	29.43
1992	29.28
1993	28.27
1994	27.97
1995	28.15
1996	28.3
1997	28.7
1998	28.28
1999	28.33
2000	28.58
2001	29
2002	29.13
2003	28.85
2004	28.37
2005	28.18
2006	27.95
2007	28.07
2008	28.06
2009	28.06
2010	28.15
2011	27.8
2012	27.37
2013	27
2014	26.66
2015	26.36
2016	26.04