Year	Cases per 100,000
1990	37.92
1991	36.82
1992	36.08
1993	35.42
1994	34.69
1995	34.45
1996	33.79
1997	32.93
1998	32.31
1999	32.04
2000	31.32
2001	30.7
2002	30
2003	29.33
2004	28.67
2005	28.28
2006	27.5
2007	26.7
2008	26.21
2009	25.28
2010	24.56
2011	24.03
2012	23.5
2013	22.79
2014	22.15
2015	22.07
2016	21.92