Year	per 1,000 uninfected population ages 15-49
1990	0.6
1991	0.7
1992	0.9
1993	1
1994	1.1
1995	1.2
1996	1.3
1997	1.5
1998	1.5
1999	1.7
2000	1.7
2001	1.8
2002	1.9
2003	1.9
2004	2
2005	2
2006	2
2007	2
2008	2
2009	2
2010	1.9
2011	1.9
2012	1.9
2013	1.9
2014	1.8
2015	1.7
2016	1.7
2017	1.6
2018	1.6