Year	% (modeled ILO estimate)
1991	51.051
1992	51.522
1993	52.359
1994	47.313
1995	44.506
1996	42.399
1997	42.053
1998	41.918
1999	41.31
2000	41.226
2001	42.315
2002	42.532
2003	43.291
2004	42.48
2005	42.619
2006	42.804
2007	43.109
2008	43.449
2009	43.887
2010	43.857
2011	43.41
2012	43.266
2013	42.685
2014	42.367
2015	42.441
2016	42.469
2017	42.117
2018	41.748
2019	41.318
2020	40.547
2021	40.682
2022	40.63
2023	40.722