Year	% (modeled ILO estimate)
1991	52.922
1992	52.721
1993	51.968
1994	51.132
1995	50.873
1996	50.933
1997	50.952
1998	51.124
1999	49.26
2000	47.378
2001	46.343
2002	44.549
2003	44.339
2004	44.177
2005	45.38
2006	46.728
2007	48.817
2008	50.65
2009	50.717
2010	50.589
2011	50.78
2012	50.81
2013	50.727
2014	51.801
2015	52.503
2016	53.412
2017	54.366
2018	54.908
2019	55.119
2020	55.074
2021	56.023
2022	56.883
2023	57.275