Year % of total population ages 15+ (modeled ILO estimate) 1991 63.02 1992 63.134 1993 63.247 1994 63.361 1995 63.474 1996 63.587 1997 63.7 1998 63.813 1999 63.925 2000 64.038 2001 64.15 2002 64.447 2003 64.743 2004 65.038 2005 65.332 2006 65.625 2007 65.916 2008 66.207 2009 66.496 2010 66.783 2011 67.07 2012 69.03 2013 69.25 2014 69.492 2015 69.732 2016 69.972 2017 70.21 2018 70.55 2019 69.46 2020 66.43 2021 68.46 2022 69.89 2023 68.009