Year	per 1,000 uninfected population ages 15-49
1990	18.2
1991	20.41
1992	21.14
1993	20.27
1994	18.15
1995	15.35
1996	12.56
1997	10.43
1998	8.69
1999	7.4
2000	6.44
2001	5.78
2002	5.18
2003	4.71
2004	4.4
2005	4.06
2006	3.69
2007	3.39
2008	3.19
2009	2.94
2010	2.65
2011	2.47
2012	2.3
2013	2.2
2014	2.1
2015	1.98
2016	1.83
2017	1.72
2018	1.62