Year	Cases per 100,000
1990	34.49
1991	37.26
1992	40.31
1993	43.66
1994	47.35
1995	51.42
1996	53.75
1997	56.21
1998	58.8
1999	61.53
2000	64.41
2001	65.82
2002	67.28
2003	68.79
2004	70.33
2005	71.92
2006	70.66
2007	69.42
2008	68.22
2009	67.06
2010	65.96
2011	66.79
2012	67.67
2013	68.56
2014	69.46
2015	70.38
2016	71.34