Year	% (modeled ILO estimate)
1991	49.711
1992	27.831
1993	32.751
1994	37.039
1995	43.762
1996	43.591
1997	41.043
1998	38.082
1999	36.569
2000	37.943
2001	38.496
2002	38.89
2003	37.44
2004	35.667
2005	33.593
2006	31.475
2007	28.872
2008	27.206
2009	28.663
2010	27.431
2011	38.833
2012	29.767
2013	23.641
2014	20.958
2015	23.676
2016	22.916
2017	24.878
2018	30.391
2019	31.004
2020	27.374
2021	28.527
2022	28.729
2023	28.914