Year	Cases per 100,000
1990	4.73
1991	4.76
1992	4.79
1993	4.82
1994	4.86
1995	4.89
1996	4.97
1997	5.05
1998	5.13
1999	5.21
2000	5.29
2001	5.35
2002	5.4
2003	5.46
2004	5.51
2005	5.57
2006	5.63
2007	5.68
2008	5.74
2009	5.79
2010	5.85
2011	5.86
2012	5.87
2013	5.88
2014	5.89
2015	5.9
2016	5.91