Year % of female working-age population with basic education 1996 31.172 1997 33.172 1998 34.047 1999 31.845 2000 31.735 2001 32.713 2002 32.636 2003 28.582 2004 30.598 2005 30.151 2006 30.185 2007 31.056 2008 30.231 2009 30.275 2010 28.91 2011 26.016 2012 25.22 2013 24.335 2014 28.685 2015 26.057 2016 23.981 2017 24.712 2018 23.957 2019 22.484 2020 20.012 2021 19.665 2022 20.134 2023 18.653