Year	Cases per 100,000
1990	1.51
1991	1.59
1992	1.67
1993	1.76
1994	1.86
1995	1.96
1996	2.04
1997	2.12
1998	2.21
1999	2.31
2000	2.41
2001	2.48
2002	2.56
2003	2.65
2004	2.74
2005	2.83
2006	2.92
2007	3
2008	3.1
2009	3.19
2010	3.3
2011	3.36
2012	3.43
2013	3.51
2014	3.58
2015	3.66
2016	3.74