Year	% (modeled ILO estimate)
1991	38.744
1992	37.854
1993	37.304
1994	36.5
1995	35.831
1996	34.875
1997	34.148
1998	33.371
1999	31.04
2000	29.112
2001	27.282
2002	26.688
2003	26.14
2004	25.901
2005	25.74
2006	25.582
2007	25.449
2008	25.272
2009	22.364
2010	19.505
2011	21.059
2012	18.363
2013	17.148
2014	17.356
2015	19.393
2016	22.65
2017	23.816
2018	23.74
2019	25.172
2020	23.066
2021	23.351
2022	23.028
2023	24.007