Year	Cases per 100,000
1990	18.25
1991	18.68
1992	19.14
1993	19.61
1994	20.09
1995	20.6
1996	21.12
1997	21.67
1998	22.24
1999	22.82
2000	23.43
2001	23.75
2002	24.09
2003	24.43
2004	24.78
2005	25.14
2006	25.45
2007	25.75
2008	26.06
2009	26.39
2010	26.72
2011	27.18
2012	27.66
2013	28.14
2014	28.64
2015	29.15
2016	29.68