Year	Cases per 100,000
1990	4.49
1991	4.5
1992	4.52
1993	4.54
1994	4.56
1995	4.58
1996	4.61
1997	4.65
1998	4.69
1999	4.74
2000	4.78
2001	4.98
2002	5.2
2003	5.42
2004	5.66
2005	5.91
2006	6.07
2007	6.24
2008	6.42
2009	6.6
2010	6.8
2011	6.85
2012	6.92
2013	6.98
2014	7.05
2015	7.12
2016	7.2