Year	% (modeled ILO estimate)
1991	50.57
1992	49.122
1993	49.884
1994	50.812
1995	50.573
1996	52.155
1997	52.837
1998	52.971
1999	51.594
2000	51.55
2001	50.564
2002	50.094
2003	50.606
2004	51.654
2005	51.821
2006	51.123
2007	49.609
2008	47.497
2009	43.652
2010	41.397
2011	40.094
2012	40.974
2013	41.101
2014	41.335
2015	42.41
2016	42.836
2017	43.63
2018	45.454
2019	46.742
2020	46.056
2021	46.655
2022	49.12
2023	48.785