Year	Cases per 100,000
1990	6.29
1991	6.3
1992	6.32
1993	6.33
1994	6.35
1995	6.37
1996	6.39
1997	6.41
1998	6.42
1999	6.44
2000	6.46
2001	6.48
2002	6.51
2003	6.53
2004	6.56
2005	6.58
2006	6.62
2007	6.66
2008	6.71
2009	6.75
2010	6.79
2011	6.86
2012	6.93
2013	7
2014	7.06
2015	7.14
2016	7.21