Year	% of total population ages 15+ (modeled ILO estimate)
1991	65.396
1992	65.321
1993	65.216
1994	65.122
1995	65.067
1996	65.066
1997	65.127
1998	65.274
1999	65.535
2000	65.915
2001	66.39
2002	66.938
2003	67.36
2004	67.579
2005	67.863
2006	68.393
2007	69.152
2008	70.077
2009	71.082
2010	71.755
2011	71.144
2012	71.466
2013	71.517
2014	71.012
2015	70.856
2016	71.284
2017	71.817
2018	72.263
2019	72.376
2020	71.354
2021	71.555
2022	71.843
2023	71.865