Year	% (modeled ILO estimate)
1991	67.531
1992	66.895
1993	66.238
1994	67.277
1995	67.453
1996	67.738
1997	67.699
1998	68.563
1999	66.388
2000	65.039
2001	64.62
2002	61.887
2003	60.541
2004	63.739
2005	63.546
2006	67.408
2007	70.169
2008	70.357
2009	71.153
2010	70.688
2011	72.457
2012	71.167
2013	71.552
2014	71.915
2015	69.696
2016	68.906
2017	68.162
2018	67.197
2019	66.708
2020	62.843
2021	64.922
2022	66.534
2023	67.139