Year per 1,000 uninfected population ages 15-49 1990 11.82 1991 12.57 1992 13.16 1993 12.96 1994 12.35 1995 11.48 1996 10.76 1997 9.77 1998 8.35 1999 7.54 2000 6.77 2001 6.28 2002 5.64 2003 5.14 2004 5.03 2005 4.54 2006 4.38 2007 4.25 2008 3.9 2009 3.63 2010 3.65 2011 3.57 2012 3.52 2013 3.56 2014 3.35 2015 3.4 2016 3.08 2017 2.92 2018 3.02 2019 2.88 2020 2.76 2021 2.94 2022 2.65