Year	Cases per 100,000
1990	27.77
1991	28.4
1992	29.07
1993	29.75
1994	30.46
1995	31.2
1996	32.16
1997	33.17
1998	34.23
1999	35.32
2000	36.48
2001	38.03
2002	39.68
2003	41.41
2004	43.22
2005	45.14
2006	45.53
2007	45.91
2008	46.32
2009	46.72
2010	47.15
2011	47.4
2012	47.66
2013	47.92
2014	48.18
2015	48.45
2016	48.73