Year	% (modeled ILO estimate)
1991	47.639
1992	46.426
1993	45.558
1994	44.492
1995	42.107
1996	40.698
1997	39.737
1998	36.041
1999	31.899
2000	30.101
2001	29.762
2002	28.805
2003	22.996
2004	25.773
2005	29.138
2006	33.825
2007	39.584
2008	41.53
2009	41.506
2010	42.101
2011	42.716
2012	42.059
2013	41.634
2014	41.643
2015	39.695
2016	40.403
2017	41.967
2018	43.133
2019	43.155
2020	39.472
2021	40.951
2022	32.539
2023	35.019