Year	Cases per 100,000
1990	6.44
1991	6.62
1992	6.8
1993	6.99
1994	7.18
1995	7.38
1996	7.44
1997	7.5
1998	7.56
1999	7.62
2000	7.68
2001	7.69
2002	7.7
2003	7.72
2004	7.73
2005	7.74
2006	7.71
2007	7.67
2008	7.63
2009	7.59
2010	7.56
2011	7.58
2012	7.6
2013	7.62
2014	7.64
2015	7.67
2016	7.69