Year	Cases per 100,000
1990	6.87
1991	6.82
1992	6.75
1993	6.68
1994	6.61
1995	6.56
1996	6.56
1997	6.57
1998	6.58
1999	6.59
2000	6.61
2001	6.62
2002	6.64
2003	6.71
2004	6.77
2005	6.82
2006	6.9
2007	6.94
2008	6.98
2009	7.02
2010	7.07
2011	7.12
2012	7.18
2013	7.24
2014	7.25
2015	7.29
2016	7.34