Year	Cases per 100,000
1990	23.22
1991	24.04
1992	24.92
1993	25.85
1994	26.84
1995	27.91
1996	28.31
1997	28.74
1998	29.19
1999	29.66
2000	30.15
2001	30.83
2002	31.54
2003	32.29
2004	33.07
2005	33.89
2006	34.35
2007	34.81
2008	35.31
2009	35.83
2010	36.38
2011	37.01
2012	37.67
2013	38.35
2014	39.04
2015	39.75
2016	40.49