Year per 1,000 uninfected population ages 15-24 1990 8.308361569000839 1991 9.045354634282686 1992 9.532805777220847 1993 9.75906212208414 1994 9.708507749070499 1995 9.415070825254993 1996 9.110553902358982 1997 8.812963928643468 1998 8.427462301989049 1999 8.026907333576398 2000 7.673147220998487 2001 7.247639056428374 2002 6.845550078377875 2003 6.45914812257477 2004 6.0855657460224615 2005 5.701259028513263 2006 5.373788157491207 2007 5.073096067344954 2008 4.823326304500564 2009 4.5832018946073365 2010 4.341682043592446 2011 4.075606692720735 2012 3.822765575802317 2013 3.5452298010145618 2014 3.244204649833518 2015 2.9579458233482145 2016 2.6586122156915533 2017 2.342595618751598 2018 2.102650774134612 2019 1.873846384666094 2020 1.67389301490285 2021 1.4816495090615411 2022 1.2800491030658887