Year	% (modeled ILO estimate)
1991	57.568
1992	45.315
1993	47.798
1994	50.086
1995	53.186
1996	53.039
1997	51.873
1998	49.373
1999	48.201
2000	48.925
2001	48.76
2002	48.943
2003	48.608
2004	48.118
2005	47.416
2006	46.701
2007	45.606
2008	46.243
2009	47.473
2010	47.422
2011	51.86
2012	49.365
2013	44.101
2014	43.778
2015	45.96
2016	48.473
2017	50.152
2018	52.006
2019	53.392
2020	50.001
2021	51.336
2022	53.304
2023	53.507