Year	% (modeled ILO estimate)
1991	59.945
1992	57.214
1993	56.301
1994	55.56
1995	52.466
1996	55.243
1997	57.016
1998	55.382
1999	53.591
2000	52.171
2001	53.575
2002	54.179
2003	55.321
2004	58.991
2005	60.277
2006	61.914
2007	60.548
2008	61.785
2009	62.199
2010	62.804
2011	62.148
2012	60.882
2013	63.225
2014	59.824
2015	59.741
2016	60.618
2017	59.562
2018	59.508
2019	59.5
2020	55.223
2021	55.716
2022	59.608
2023	60.287