Year per 1,000 uninfected population 1990 4.117521593572404 1991 4.4578965014441065 1992 4.673828905060695 1993 4.762353346769034 1994 4.73748112723727 1995 4.617549495443697 1996 4.494323588745619 1997 4.351806794634896 1998 4.176722531881432 1999 3.986146254617504 2000 3.7916291209940916 2001 3.574500262941505 2002 3.3733232216477926 2003 3.194200007600581 2004 3.028315037439802 2005 2.8419785433285667 2006 2.6582244188063306 2007 2.482110170258033 2008 2.317740887608053 2009 2.1699945701227197 2010 2.0393598892108202 2011 1.9049658276375045 2012 1.7677626493953995 2013 1.6503723192243858 2014 1.5255803301302135 2015 1.3947718324387748 2016 1.2829853800281903 2017 1.1437823091011285 2018 1.0306763666423853 2019 0.9290710062715954 2020 0.8381823644171426 2021 0.7528042919603198 2022 0.6628830851512454