Year	per 1,000 uninfected population ages 15-49
1990	2.5
1991	2.7
1992	2.8
1993	2.7
1994	2.7
1995	2.3
1996	1.9
1997	1.6
1998	1.4
1999	1.2
2000	0.9
2001	0.9
2002	0.8
2003	0.7
2004	0.6
2005	0.6
2006	0.5
2007	0.5
2008	0.4
2009	0.4
2010	0.4
2011	0.4
2012	0.3
2013	0.3
2014	0.3
2015	0.3
2016	0.3
2017	0.2
2018	0.2