Year	Cases per 100,000
1990	7.69
1991	7.66
1992	7.65
1993	7.63
1994	7.62
1995	7.61
1996	7.59
1997	7.57
1998	7.56
1999	7.54
2000	7.54
2001	7.54
2002	7.56
2003	7.57
2004	7.58
2005	7.6
2006	7.59
2007	7.58
2008	7.57
2009	7.56
2010	7.57
2011	7.53
2012	7.51
2013	7.48
2014	7.47
2015	7.45
2016	7.44