Year	Cases per 100,000
1990	21.81
1991	21.82
1992	21.83
1993	21.85
1994	21.87
1995	21.89
1996	21.82
1997	21.75
1998	21.69
1999	21.63
2000	21.58
2001	21.58
2002	21.57
2003	21.58
2004	21.58
2005	21.59
2006	21.94
2007	22.3
2008	22.68
2009	23.06
2010	23.45
2011	23.5
2012	23.55
2013	23.6
2014	23.65
2015	23.7
2016	23.76