Year	Cases per 100,000
1990	14.54
1991	14.84
1992	15.16
1993	15.52
1994	15.91
1995	16.39
1996	17.15
1997	18.01
1998	18.97
1999	20.04
2000	21.26
2001	22.18
2002	23.18
2003	24.26
2004	25.42
2005	26.66
2006	27.18
2007	27.71
2008	28.26
2009	28.84
2010	29.43
2011	29.7
2012	29.97
2013	30.25
2014	30.54
2015	30.83
2016	31.12