Year	Cases per 100,000
1990	33.67
1991	33.99
1992	34.57
1993	35.2
1994	36.22
1995	37.48
1996	38.4
1997	39.32
1998	40.35
1999	41.44
2000	42.56
2001	40.97
2002	39.49
2003	37.8
2004	36.02
2005	34.29
2006	33.49
2007	32.61
2008	31.87
2009	31.07
2010	30.45
2011	29.63
2012	29.01
2013	28.48
2014	27.82
2015	27.39
2016	27.06