Year	Cases per 100,000
1990	46.89
1991	45.69
1992	43.89
1993	42.41
1994	41.1
1995	40.16
1996	41.29
1997	39.49
1998	39.01
1999	36.47
2000	34.62
2001	33.26
2002	32.08
2003	31.03
2004	29.99
2005	28.08
2006	25.69
2007	23.94
2008	23
2009	23.53
2010	23.86
2011	23.01
2012	22.48
2013	22.77
2014	22.97
2015	23.12
2016	23.24