Year	Cases per 100,000
1990	4.65
1991	4.74
1992	4.83
1993	4.92
1994	5.02
1995	5.12
1996	5.2
1997	5.29
1998	5.38
1999	5.47
2000	5.56
2001	5.58
2002	5.6
2003	5.63
2004	5.65
2005	5.69
2006	5.71
2007	5.74
2008	5.76
2009	5.79
2010	5.83
2011	5.85
2012	5.88
2013	5.91
2014	5.95
2015	5.98
2016	6.01