Year	Cases per 100,000
1990	23.41
1991	24.75
1992	26.17
1993	27.68
1994	29.28
1995	30.99
1996	30.54
1997	30.11
1998	29.7
1999	29.3
2000	28.93
2001	29.96
2002	31.03
2003	32.14
2004	33.3
2005	34.51
2006	36.1
2007	37.77
2008	39.54
2009	41.39
2010	43.34
2011	43.75
2012	44.18
2013	44.6
2014	45.04
2015	45.48
2016	45.93