Year	% (modeled ILO estimate)
1991	48.648
1992	48.519
1993	48.286
1994	47.493
1995	46.583
1996	46.881
1997	47.814
1998	48.369
1999	48.658
2000	48.759
2001	48.528
2002	48.134
2003	47.589
2004	47.005
2005	47.037
2006	48.493
2007	49.848
2008	50.655
2009	50.847
2010	50.783
2011	50.621
2012	50.654
2013	50.789
2014	51.014
2015	51.349
2016	51.678
2017	51.096
2018	53.536
2019	48.112
2020	34.627
2021	41.412
2022	40.606
2023	41.353