Year % of total population ages 15+ (modeled ILO estimate) 1991 54.73 1992 54.579 1993 54.436 1994 54.255 1995 54.015 1996 53.85 1997 53.612 1998 53.328 1999 53.044 2000 52.78 2001 52.591 2002 52.456 2003 52.352 2004 52.254 2005 52.149 2006 52.042 2007 51.946 2008 51.86 2009 51.786 2010 51.72 2011 51.653 2012 51.559 2013 51.456 2014 51.37 2015 51.31 2016 51.14 2017 51.027 2018 50.94 2019 50.833 2020 50.35 2021 50.499 2022 50.859 2023 50.969