Year	% (modeled ILO estimate)
1991	37.072
1992	37.194
1993	36.689
1994	37.029
1995	36.753
1996	35.773
1997	34.676
1998	32.073
1999	32.021
2000	30.968
2001	31.939
2002	32.603
2003	32.49
2004	32.998
2005	31.17
2006	28.579
2007	26.187
2008	24.022
2009	22.996
2010	23.126
2011	23.714
2012	24.456
2013	24.658
2014	26.568
2015	28.105
2016	28.252
2017	28.007
2018	27.262
2019	27.552
2020	26.213
2021	27.509
2022	28.856
2023	27.037