Year	% (modeled ILO estimate)
1991	27.98
1992	28.125
1993	28.131
1994	27.883
1995	27.562
1996	27.283
1997	27.1
1998	26.742
1999	27.473
2000	27.283
2001	27.272
2002	27.185
2003	27.044
2004	26.721
2005	26.393
2006	25.746
2007	25.216
2008	24.643
2009	25.097
2010	24.86
2011	24.585
2012	26.045
2013	26.204
2014	33.518
2015	32.976
2016	35.515
2017	34.135
2018	38.041
2019	41.237
2020	36.129
2021	35.881
2022	35.139
2023	36.179