Year	Cases per 100,000
1990	18.04
1991	18.92
1992	19.86
1993	20.86
1994	21.93
1995	23.06
1996	23.92
1997	24.83
1998	25.78
1999	26.78
2000	27.81
2001	28.43
2002	29.06
2003	29.71
2004	30.38
2005	31.07
2006	31.88
2007	32.72
2008	33.58
2009	34.48
2010	35.41
2011	35.91
2012	36.43
2013	36.95
2014	37.49
2015	38.03
2016	38.6