Year	per 1,000 uninfected population ages 15-49
1990	7.4
1991	14.2
1992	23.5
1993	33.7
1994	43.2
1995	48.1
1996	49.3
1997	47.9
1998	44.1
1999	40.9
2000	38.2
2001	35.7
2002	33.7
2003	32
2004	30.9
2005	29.8
2006	29.2
2007	28.4
2008	27.5
2009	27.4
2010	26.5
2011	25
2012	24.5
2013	24
2014	23.1
2015	21.2
2016	19.2
2017	17.2
2018	15.4