Year	Cases per 100,000
1990	19.04
1991	19.96
1992	20.95
1993	21.93
1994	22.8
1995	23.88
1996	24.91
1997	25.55
1998	26.3
1999	27.34
2000	28.49
2001	29.33
2002	30.29
2003	31.21
2004	32.2
2005	33.19
2006	34.12
2007	35.22
2008	36.22
2009	36.91
2010	37.55
2011	36.92
2012	36.37
2013	35.97
2014	35.7
2015	35.14
2016	34.15