Year	Cases per 100,000
1990	6.6
1991	6.66
1992	6.72
1993	6.78
1994	6.84
1995	6.91
1996	7.04
1997	7.18
1998	7.32
1999	7.47
2000	7.62
2001	7.65
2002	7.68
2003	7.72
2004	7.75
2005	7.79
2006	7.79
2007	7.79
2008	7.79
2009	7.79
2010	7.8
2011	7.78
2012	7.76
2013	7.75
2014	7.74
2015	7.74
2016	7.74