Year per 1,000 uninfected population ages 15-24 1990 4.191141852057314 1991 4.403854083936084 1992 4.427342420562397 1993 4.2818132299681615 1994 4.043000973470577 1995 3.743783996761357 1996 3.4840322399319725 1997 3.265540268873677 1998 3.0516707441934097 1999 2.8489411995707137 2000 2.674611736145273 2001 2.490147704620109 2002 2.3268934092378113 2003 2.179474152594911 2004 2.056579594380694 2005 1.9291792856834937 2006 1.825825007200154 2007 1.7342469619858731 2008 1.6554302341865694 2009 1.5838799231508898 2010 1.5196560329745565 2011 1.451557477883779 2012 1.3944085915218987 2013 1.3277363096519794 2014 1.2450083546337731 2015 1.1527504946349356 2016 1.0655286235639085 2017 0.9732150284176248 2018 0.8987013088382546 2019 0.8240133553630266 2020 0.7400082331003924 2021 0.6666579393298299 2022 0.575826819759653