Year	Cases per 100,000
1990	6.54
1991	6.57
1992	6.61
1993	6.66
1994	6.71
1995	6.77
1996	6.72
1997	6.67
1998	6.62
1999	6.58
2000	6.54
2001	6.57
2002	6.6
2003	6.63
2004	6.67
2005	6.7
2006	6.76
2007	6.81
2008	6.86
2009	6.92
2010	6.98
2011	7
2012	7.02
2013	7.05
2014	7.07
2015	7.11
2016	7.14