Year	Cases per 100,000
1990	55.24
1991	53
1992	54.5
1993	59.97
1994	61.02
1995	55.96
1996	50.1
1997	44.91
1998	42.36
1999	43.39
2000	43.75
2001	42.33
2002	41.83
2003	41.01
2004	39.69
2005	39.21
2006	36.45
2007	35.3
2008	34.9
2009	32.92
2010	32.4
2011	31.01
2012	29.42
2013	28.86
2014	28.65
2015	28.75
2016	28.61