Year % of total population ages 15+ (modeled ILO estimate) 1991 64.374 1992 64.463 1993 64.416 1994 64.296 1995 64.345 1996 64.282 1997 64.396 1998 64.352 1999 64.108 2000 64.165 2001 64.212 2002 63.815 2003 63.373 2004 64.015 2005 64.28 2006 64.86 2007 64.42 2008 64.29 2009 64.04 2010 63.85 2011 63.63 2012 63.11 2013 62.631 2014 62.15 2015 61.666 2016 61.18 2017 60.492 2018 59.297 2019 55.67 2020 51.031 2021 51.35 2022 53.511 2023 54.659