Year	per 1,000 uninfected population ages 15-49
1990	2.3
1991	2.5
1992	2.6
1993	2.6
1994	2.3
1995	2.2
1996	2.2
1997	2
1998	1.8
1999	1.7
2000	1.6
2001	1.4
2002	1.4
2003	1.3
2004	1.2
2005	1.2
2006	1.1
2007	1.1
2008	1
2009	0.9
2010	0.9
2011	0.8
2012	0.8
2013	0.8
2014	0.8
2015	0.7
2016	0.6
2017	0.6
2018	0.6