Year	% (modeled ILO estimate)
1991	35.052
1992	34.429
1993	34.131
1994	33.484
1995	32.976
1996	32.513
1997	32.683
1998	32.446
1999	32.18
2000	31.71
2001	31.525
2002	31.338
2003	31.073
2004	30.769
2005	30.471
2006	30.169
2007	29.863
2008	29.506
2009	32.627
2010	30.961
2011	29.189
2012	28.419
2013	27.853
2014	27.451
2015	27.227
2016	26.728
2017	26.111
2018	25.464
2019	24.79
2020	23.525
2021	23.671
2022	25.076
2023	22.779