Year	% of total population ages 15+ (modeled ILO estimate)
1991	61.999
1992	61.965
1993	61.77
1994	62.251
1995	62.983
1996	64.369
1997	65.88
1998	66.866
1999	66.628
2000	66.989
2001	67.048
2002	67.271
2003	66.04
2004	65.908
2005	65.638
2006	65.704
2007	66.428
2008	67.465
2009	66.424
2010	65.631
2011	65.179
2012	65.317
2013	65.049
2014	64.776
2015	64.903
2016	64.427
2017	63.635
2018	63.912
2019	63.987
2020	63.59
2021	66.047
2022	65.587
2023	65.243