Year	Cases per 100,000
1990	4.38
1991	4.39
1992	4.4
1993	4.41
1994	4.42
1995	4.43
1996	4.44
1997	4.46
1998	4.47
1999	4.49
2000	4.51
2001	4.5
2002	4.5
2003	4.49
2004	4.49
2005	4.48
2006	4.51
2007	4.53
2008	4.55
2009	4.57
2010	4.59
2011	4.6
2012	4.61
2013	4.62
2014	4.62
2015	4.63
2016	4.64