Year per 1,000 uninfected population ages 15-49 1990 5.19 1991 6.29 1992 7.44 1993 8.63 1994 9.72 1995 11.03 1996 12.3 1997 13.51 1998 14.42 1999 15.11 2000 15.51 2001 15.47 2002 15.07 2003 14.52 2004 14 2005 13.62 2006 13.21 2007 12.93 2008 12.76 2009 12.65 2010 12.53 2011 12.42 2012 12.42 2013 12.03 2014 11.12 2015 10.44 2016 9.62 2017 8.91 2018 8.5 2019 8.19 2020 7.84 2021 6.96 2022 5.54