Year	Cases per 100,000
1990	5.74
1991	5.77
1992	5.8
1993	5.83
1994	5.86
1995	5.89
1996	5.92
1997	5.95
1998	5.99
1999	6.02
2000	6.05
2001	6.07
2002	6.09
2003	6.11
2004	6.12
2005	6.14
2006	6.17
2007	6.19
2008	6.21
2009	6.24
2010	6.26
2011	6.3
2012	6.33
2013	6.36
2014	6.4
2015	6.43
2016	6.47