Year	Cases per 100,000
1990	41.17
1991	42.7
1992	42.17
1993	40.42
1994	38.63
1995	36.29
1996	35.83
1997	31.63
1998	27.64
1999	26.02
2000	21.14
2001	18.11
2002	21.54
2003	23.45
2004	26.27
2005	26.56
2006	27.03
2007	25.54
2008	23.63
2009	22.54
2010	20.9
2011	22.75
2012	23.01
2013	23.05
2014	22.24
2015	22.49
2016	22.24