Year	% (modeled ILO estimate)
1991	60.398
1992	57.266
1993	54.471
1994	54.06
1995	53.761
1996	54.782
1997	55.594
1998	55.926
1999	55.226
2000	55.847
2001	55.546
2002	55.635
2003	54.296
2004	55.03
2005	54.373
2006	53.707
2007	52.694
2008	52.108
2009	47.986
2010	46.912
2011	45.903
2012	46.301
2013	46.37
2014	48.103
2015	50.033
2016	50.824
2017	50.592
2018	50.703
2019	50.389
2020	47.321
2021	44.677
2022	48.642
2023	48.418