Year	% (modeled ILO estimate)
1991	46.747
1992	45.862
1993	45.759
1994	45.217
1995	44.169
1996	43.459
1997	42.889
1998	39.193
1999	37.769
2000	37.705
2001	36.129
2002	33.761
2003	27.02
2004	28.469
2005	32.408
2006	35.399
2007	41.423
2008	43.405
2009	44.334
2010	44.203
2011	44.438
2012	42.7
2013	43.653
2014	43.202
2015	41.455
2016	40.32
2017	41.118
2018	41.994
2019	42.181
2020	38.851
2021	40.119
2022	36.741
2023	37.805