Year	Cases per 100,000
1990	19.63
1991	19.79
1992	19.97
1993	20.16
1994	20.37
1995	20.6
1996	20.81
1997	21.03
1998	21.27
1999	21.5
2000	21.75
2001	21.88
2002	22.03
2003	22.18
2004	22.34
2005	22.51
2006	22.92
2007	23.34
2008	23.77
2009	24.21
2010	24.66
2011	25.13
2012	25.62
2013	26.11
2014	26.62
2015	27.13
2016	27.67