Year	Cases per 100,000
1990	34.37
1991	34.59
1992	34.82
1993	35.05
1994	35.29
1995	35.53
1996	35.88
1997	36.23
1998	36.6
1999	36.96
2000	37.34
2001	37.36
2002	37.39
2003	37.42
2004	37.45
2005	37.49
2006	36.82
2007	36.15
2008	35.51
2009	34.88
2010	34.27
2011	34.29
2012	34.31
2013	34.33
2014	34.35
2015	34.37
2016	34.4
