Year	% (modeled ILO estimate)
1991	59.557
1992	58.689
1993	57.795
1994	56.884
1995	55.967
1996	55.147
1997	54.277
1998	53.375
1999	52.771
2000	51.913
2001	50.846
2002	49.686
2003	48.59
2004	46.538
2005	43.743
2006	43.116
2007	41.554
2008	40.657
2009	39.817
2010	37.72
2011	33.299
2012	26.712
2013	25.223
2014	23.398
2015	26.24
2016	25.224
2017	24.194
2018	23.162
2019	23.196
2020	20.884
2021	21.568
2022	18.807
2023	18.417