Year	Cases per 100,000
1990	18.11
1991	18.82
1992	19.59
1993	20.4
1994	21.25
1995	22.15
1996	23.06
1997	24.03
1998	25.05
1999	26.13
2000	27.28
2001	27.9
2002	28.55
2003	29.23
2004	29.94
2005	30.68
2006	31.49
2007	32.31
2008	33.18
2009	34.07
2010	35.02
2011	35.8
2012	36.63
2013	37.48
2014	38.36
2015	39.27
2016	40.22