Year	Cases per 100,000
1990	21.01
1991	21.47
1992	22
1993	22.66
1994	23.4
1995	24.18
1996	24.87
1997	26.29
1998	27.32
1999	28.38
2000	29.51
2001	29.36
2002	29.36
2003	29.18
2004	28.99
2005	28.79
2006	28.4
2007	28.02
2008	27.65
2009	27.35
2010	27.04
2011	27
2012	27.01
2013	27.08
2014	27.11
2015	27.21
2016	27.29