Year	Cases per 100,000
1990	75.43
1991	75.14
1992	76.8
1993	78.35
1994	75.89
1995	72.31
1996	74.33
1997	68.91
1998	69.63
1999	70.77
2000	73.38
2001	66.6
2002	64.36
2003	62.37
2004	58.72
2005	56.3
2006	56.85
2007	53.72
2008	52.13
2009	51.15
2010	49.01
2011	47.55
2012	47.7
2013	46.93
2014	47.27
2015	44.84
2016	44.71