Year	% (modeled ILO estimate)
1991	43.632
1992	42.774
1993	41.971
1994	40.976
1995	39.695
1996	38.812
1997	37.504
1998	35.936
1999	34.403
2000	32.989
2001	31.981
2002	31.287
2003	30.756
2004	30.248
2005	29.726
2006	29.202
2007	28.723
2008	28.283
2009	27.91
2010	27.587
2011	27.255
2012	26.818
2013	26.335
2014	25.915
2015	25.624
2016	24.838
2017	24.318
2018	23.921
2019	23.447
2020	23.099
2021	22.863
2022	23.365
2023	23.592