Year	Cases per 100,000
1990	6.6
1991	6.65
1992	6.69
1993	6.74
1994	6.78
1995	6.83
1996	6.91
1997	7
1998	7.08
1999	7.17
2000	7.26
2001	7.28
2002	7.31
2003	7.34
2004	7.37
2005	7.41
2006	7.47
2007	7.52
2008	7.58
2009	7.65
2010	7.71
2011	7.72
2012	7.74
2013	7.76
2014	7.78
2015	7.79
2016	7.81