Year	% (modeled ILO estimate)
1991	44.754
1992	44.118
1993	43.518
1994	43.968
1995	48.302
1996	50.413
1997	51.17
1998	51.777
1999	53.246
2000	55.541
2001	56.265
2002	55.16
2003	55.912
2004	57.742
2005	57.541
2006	56.625
2007	56.742
2008	56.641
2009	56.513
2010	56.302
2011	55.101
2012	53.586
2013	54.931
2014	52.799
2015	55.386
2016	56.557
2017	55.229
2018	54.43
2019	54.765
2020	52.823
2021	53.578
2022	54.127
2023	54.461