Year	% (modeled ILO estimate)
1991	54.598
1992	54.548
1993	54.788
1994	55.059
1995	55.36
1996	55.695
1997	56.069
1998	56.483
1999	56.938
2000	57.433
2001	57.968
2002	58.543
2003	57.329
2004	56.116
2005	54.903
2006	53.692
2007	52.488
2008	51.286
2009	50.084
2010	48.886
2011	47.696
2012	45.654
2013	43.631
2014	41.633
2015	39.664
2016	37.732
2017	35.841
2018	33.995
2019	33.804
2020	33.492
2021	33.391
2022	33.162
2023	33.223