Year	Cases per 100,000
1990	25.19
1991	25.39
1992	25.6
1993	25.81
1994	26.03
1995	26.25
1996	26.45
1997	26.65
1998	26.86
1999	27.07
2000	27.29
2001	27.45
2002	27.62
2003	27.79
2004	27.96
2005	28.15
2006	28.36
2007	28.58
2008	28.8
2009	29.03
2010	29.26
2011	29.61
2012	29.97
2013	30.34
2014	30.72
2015	31.1
2016	31.5