Year	Cases per 100,000
1990	23.64
1991	24.28
1992	24.96
1993	25.66
1994	26.39
1995	27.16
1996	27.72
1997	28.31
1998	28.92
1999	29.55
2000	30.22
2001	30.98
2002	31.79
2003	32.63
2004	33.5
2005	34.42
2006	35.11
2007	35.79
2008	36.51
2009	37.25
2010	38.03
2011	38.37
2012	38.74
2013	39.12
2014	39.51
2015	39.91
2016	40.34