Year	% (modeled ILO estimate)
1991	50.476
1992	50.444
1993	50.384
1994	50.309
1995	50.549
1996	50.743
1997	50.927
1998	51.683
1999	52.368
2000	48.959
2001	48.447
2002	48.025
2003	47.575
2004	47.168
2005	46.756
2006	51.934
2007	48.987
2008	48.231
2009	48.15
2010	49.032
2011	49.905
2012	43.354
2013	43.615
2014	49.036
2015	41.077
2016	40.594
2017	41.58
2018	46.258
2019	45.653
2020	42.057
2021	40.721
2022	41.597
2023	42.441