Year	% (modeled ILO estimate)
1991	32.183
1992	32.571
1993	31.694
1994	32.655
1995	32.074
1996	31.394
1997	30.015
1998	28.441
1999	28.593
2000	27.114
2001	27.322
2002	28.087
2003	27.783
2004	28.323
2005	26.006
2006	23.796
2007	22.314
2008	19.674
2009	19.158
2010	18.844
2011	20.035
2012	20.628
2013	21.13
2014	23.407
2015	24.719
2016	24.833
2017	24.764
2018	23.218
2019	24.646
2020	23.31
2021	23.781
2022	25.175
2023	22.994