Year	Cases per 100,000
1990	2.15
1991	2.22
1992	2.29
1993	2.37
1994	2.45
1995	2.53
1996	2.59
1997	2.65
1998	2.71
1999	2.77
2000	2.83
2001	2.88
2002	2.92
2003	2.97
2004	3.02
2005	3.07
2006	3.14
2007	3.22
2008	3.31
2009	3.4
2010	3.49
2011	3.53
2012	3.57
2013	3.61
2014	3.65
2015	3.7
2016	3.74