Year	Cases per 100,000
1990	14.14
1991	15.1
1992	16.14
1993	17.25
1994	18.44
1995	19.72
1996	21.01
1997	22.39
1998	23.87
1999	25.45
2000	27.15
2001	27.54
2002	27.94
2003	28.35
2004	28.76
2005	29.2
2006	29.3
2007	29.4
2008	29.51
2009	29.62
2010	29.74
2011	30.25
2012	30.77
2013	31.31
2014	31.85
2015	32.41
2016	32.98