Year	Cases per 100,000
1980	10.91818
1981	10.05636
1982	9.93455
1983	10.72273
1984	11.13091
1985	12.23909
1986	11.76727
1987	13.42545
1988	10.99364
1989	13.57182
1990	15.5
1991	15.65
1992	15.81
1993	15.97
1994	16.13
1995	16.29
1996	16.56
1997	16.83
1998	17.1
1999	17.38
2000	17.67
2001	17.99
2002	18.32
2003	18.66
2004	19.01
2005	19.37
2006	19.69
2007	20.02
2008	20.36
2009	20.71
2010	21.07
2011	21.4
2012	21.75
2013	22.1
2014	22.45
2015	22.82
2016	23.19