Year	% (modeled ILO estimate)
1991	60.374
1992	59.046
1993	58.456
1994	58.449
1995	57.74
1996	57.084
1997	56.063
1998	55.316
1999	54.682
2000	54.198
2001	52.267
2002	50.958
2003	47.782
2004	48.914
2005	47.293
2006	49.792
2007	49.167
2008	50.281
2009	44.857
2010	45.018
2011	45.851
2012	45.043
2013	45.723
2014	47.374
2015	49.163
2016	50.196
2017	49.327
2018	50.463
2019	50.114
2020	44.336
2021	48.934
2022	50.457
2023	49.355