Year % of total population ages 15+ (modeled ILO estimate) 1991 66.72 1992 66.938 1993 67.295 1994 67.698 1995 68.044 1996 68.071 1997 68.245 1998 68.127 1999 67.493 2000 67.63 2001 67.64 2002 66.6 2003 67.44 2004 66.69 2005 65.34 2006 64.618 2007 63.89 2008 64.16 2009 66.95 2010 67.08 2011 67.51 2012 68.07 2013 67.27 2014 66.99 2015 67.02 2016 66.42 2017 66.01 2018 65.24 2019 64.32 2020 63.42 2021 64.33 2022 63.16 2023 63.292