Year % of total population ages 15+ (modeled ILO estimate) 1991 49.559 1992 49.6 1993 49.672 1994 50.104 1995 49.913 1996 50.208 1997 50.711 1998 51.046 1999 51.584 2000 52.708 2001 51.927 2002 53.507 2003 54.679 2004 55.616 2005 56.774 2006 57.658 2007 58.273 2008 59.061 2009 59.181 2010 59.294 2011 59.349 2012 59.389 2013 59.01 2014 58.577 2015 58.459 2016 58.219 2017 57.823 2018 57.552 2019 57.516 2020 56.325 2021 57.417 2022 57.513 2023 57.592