Year	per 1,000 uninfected population ages 15-49
1990	7.9
1991	10.9
1992	14.27
1993	18.05
1994	21.27
1995	23.6
1996	24.37
1997	23.4
1998	21.84
1999	20.09
2000	18.47
2001	17.12
2002	15.87
2003	14.89
2004	13.83
2005	13.34
2006	11.75
2007	10.38
2008	9.52
2009	9.03
2010	9.05
2011	8.56
2012	8.28
2013	7.97
2014	7.66
2015	7.42
2016	7.28
2017	6.86
2018	6.29
2019	5.68
2020	4.86
2021	4.78
2022	4.2