Year % of total population ages 15+ (modeled ILO estimate) 1991 63.79 1992 63.99 1993 63.81 1994 63.61 1995 63.42 1996 63.49 1997 63.67 1998 63.33 1999 62.85 2000 62.44 2001 61.99 2002 61.23 2003 60.77 2004 60.42 2005 60.42 2006 60.42 2007 60.39 2008 60.16 2009 59.86 2010 59.58 2011 59.25 2012 59.01 2013 59.25 2014 59.44 2015 59.5 2016 59.99 2017 60.44 2018 61.45 2019 62.01 2020 61.95 2021 62.12 2022 62.5 2023 62.91