Year	per 1,000 uninfected population ages 15-49
1990	2.1
1991	2.1
1992	2.3
1993	2.4
1994	2.4
1995	2.4
1996	2.2
1997	2.1
1998	2
1999	1.7
2000	1.6
2001	1.3
2002	1.1
2003	1
2004	0.9
2005	0.9
2006	0.7
2007	0.7
2008	0.6
2009	0.6
2010	0.5
2011	0.5
2012	0.5
2013	0.5
2014	0.5
2015	0.5
2016	0.5
2017	0.5
2018	0.4