Year	per 1,000 uninfected population ages 15-49
1990	2.7
1991	2.6
1992	2.5
1993	2.4
1994	2.2
1995	2
1996	1.8
1997	1.7
1998	1.5
1999	1.4
2000	1.3
2001	1.2
2002	1.1
2003	1
2004	1
2005	0.9
2006	0.8
2007	0.7
2008	0.7
2009	0.6
2010	0.6
2011	0.5
2012	0.5
2013	0.4
2014	0.4
2015	0.4
2016	0.4
2017	0.3
2018	0.3