Year	Cases per 100,000
1990	56.51
1991	56.14
1992	56.31
1993	55.63
1994	55.91
1995	55.77
1996	54.81
1997	55.01
1998	56.24
1999	58.62
2000	60.78
2001	60.77
2002	59.46
2003	56.93
2004	54.65
2005	53.65
2006	54.17
2007	54.36
2008	54.45
2009	53.79
2010	53.37
2011	52.48
2012	52.16
2013	51.23
2014	51.44
2015	51.57
2016	51.98