Year	Cases per 100,000
1990	45
1991	44.35
1992	43.98
1993	43.74
1994	44.01
1995	45.18
1996	46.59
1997	48.52
1998	51.28
1999	54
2000	56.92
2001	58.4
2002	59.44
2003	59.24
2004	57.21
2005	53.46
2006	50.59
2007	48.33
2008	46.18
2009	43.61
2010	42.12
2011	41.12
2012	41.43
2013	40.75
2014	40.85
2015	41.13
2016	41.61