Year	per 1,000 uninfected population ages 15-49
1990	0.5
1991	0.6
1992	0.8
1993	0.7
1994	0.6
1995	0.7
1996	0.8
1997	0.9
1998	0.9
1999	1
2000	1
2001	1
2002	1
2003	1
2004	1
2005	1
2006	1
2007	1.1
2008	1.1
2009	1.1
2010	1.1
2011	1.1
2012	1.1
2013	1.1
2014	1.1
2015	1.1
2016	1.1
2017	1.1
2018	1.1