Year	% (modeled ILO estimate)
1991	33.549
1992	35.189
1993	28.348
1994	26.53
1995	26.256
1996	24.658
1997	28.156
1998	29.437
1999	28.017
2000	24.967
2001	23.725
2002	25.312
2003	23.791
2004	21.243
2005	26.139
2006	28.596
2007	32.313
2008	31.785
2009	25.373
2010	24.235
2011	23.358
2012	25.509
2013	27.072
2014	28.291
2015	31.894
2016	31.604
2017	30.946
2018	30.669
2019	29.553
2020	26.709
2021	25.626
2022	29.808
2023	28.473