Year per 1,000 uninfected population ages 15-24 1990 6.918162915278749 1991 7.50189574523193 1992 7.899384861358229 1993 8.068021695567577 1994 8.017659853726823 1995 7.781571721422472 1996 7.518892284950072 1997 7.244326333000628 1998 6.913319733990242 1999 6.5610985851343955 2000 6.232207012250026 2001 5.86197879629104 2002 5.519979031959716 2003 5.193640059182232 2004 4.886420876685311 2005 4.570979383452485 2006 4.307394685777722 2007 4.067231705901667 2008 3.8612262726226616 2009 3.6624346710773046 2010 3.467306569105889 2011 3.2620660382742708 2012 3.0563613857715777 2013 2.8421386570133387 2014 2.6106227005377516 2015 2.3887257859461424 2016 2.155024977540411 2017 1.908214994736996 2018 1.7217035793274855 2019 1.5424054095229673 2020 1.3810158541608948 2021 1.230122858690275 2022 1.066967123039651