Year	% (modeled ILO estimate)
1991	56.22
1992	55.307
1993	55.937
1994	54.964
1995	54.952
1996	51.813
1997	50.983
1998	49.032
1999	51.16
2000	49.375
2001	52.031
2002	49.87
2003	50.977
2004	50.246
2005	48.914
2006	47.453
2007	48.055
2008	44.664
2009	44.213
2010	46
2011	46.38
2012	46.75
2013	47.304
2014	49.045
2015	50.782
2016	50.647
2017	49.53
2018	49.391
2019	49.071
2020	49.479
2021	50.297
2022	49.108
2023	48.791