Year	% of total population ages 15+ (modeled ILO estimate)
1991	68.205
1992	67.878
1993	67.564
1994	67.367
1995	67.163
1996	66.879
1997	66.848
1998	67.081
1999	69.333
2000	68.774
2001	68.131
2002	68.579
2003	68.816
2004	68.924
2005	68.894
2006	69.21
2007	68.821
2008	68.384
2009	68.013
2010	67.673
2011	67.494
2012	67.308
2013	67.293
2014	67.179
2015	67.133
2016	67.07
2017	67.347
2018	67.485
2019	66.803
2020	66.168
2021	65.804
2022	66.326
2023	66.679