New cases,
Percent of
those tested
(Incidence)

Year
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002

Cases Percent
of those tested
(Prevalence)

Prevalence
Incidence Count Count

Tested Count

>=5 mcg/dL
>=5 mcg/dL
>=5 mcg/dL
>=5 mcg/dL
>=5 mcg/dL
1.8%
2.8%
406
636
2.9%
3.9%
677
953
24,501
3.6%
4.8%
834
1192
24,738
4.0%
5.3%
943
1343
25,399
4.0%
5.2%
963
1338
25,857
4.1%
5.5%
999
1460
26,531
5.0%
6.4%
1227
1720
27,065
5.6%
7.5%
1338
2036
27,020
7.4%
9.8%
1715
2636
26,892
14.0%
16.9%
3444
4747
28,123
10.4%
13.8%
2710
4164
30,222
10.8%
14.4%
2901
4601
32,032
12.8%
17.5%
3442
5763
32,937
14.5%
19.9%
3786
6582
33,142
19.0%
25.2%
4929
8556
33,903
18.8%
25.9%
4766
8854
34,220
25.1%
33.6%
6320
11716
34,825