Year per 1,000 uninfected population ages 15-49 1990 6.075283654233277 1991 6.282725384140951 1992 6.265871222555649 1993 6.042304807924108 1994 5.691856740239034 1995 5.28895570648803 1996 4.978469017867046 1997 4.716436707964243 1998 4.432105771369594 1999 4.152195172968285 2000 3.9209815500608522 2001 3.646288855698797 2002 3.4165820062419754 2003 3.197766677974599 2004 3.0236582368766136 2005 2.844455272520286 2006 2.7029159725154237 2007 2.5812146450933535 2008 2.471680840505634 2009 2.3672058686289157 2010 2.273465932408271 2011 2.2045494690158347 2012 2.0979709748540722 2013 1.9760078013913756 2014 1.8347359231772338 2015 1.6986824981095225 2016 1.5847701757377763 2017 1.4428481464366265 2018 1.3257642114725452 2019 1.2012590074981206 2020 1.0669929980061832 2021 0.948398569754648 2022 0.8103186035900116