Year per 1,000 uninfected population ages 15-49 1990 4.56 1991 5.78 1992 7.13 1993 8.67 1994 10.01 1995 11.23 1996 12.52 1997 13.68 1998 14.58 1999 15.28 2000 15.43 2001 15.29 2002 14.99 2003 14.61 2004 14.16 2005 13.78 2006 13.57 2007 13.35 2008 13.26 2009 13.06 2010 12.94 2011 12.74 2012 12.53 2013 12.3 2014 11.91 2015 11.46 2016 11.04 2017 10.54 2018 10.1