Year	% (modeled ILO estimate)
1991	35.35
1992	35.723
1993	32.662
1994	33.002
1995	31.71
1996	29.904
1997	29.322
1998	29.428
1999	30.105
2000	32.63
2001	29.95
2002	30.228
2003	28.812
2004	32.097
2005	32.333
2006	31.936
2007	31.558
2008	30.766
2009	29.917
2010	29.763
2011	29.767
2012	27.897
2013	28.233
2014	28.069
2015	27.111
2016	26.15
2017	25.602
2018	27.915
2019	29.628
2020	26.681
2021	28.408
2022	29.938
2023	30.525