Year	% (modeled ILO estimate)
1991	58.938
1992	56.751
1993	54.327
1994	53.109
1995	50.6
1996	47.403
1997	46.445
1998	46.747
1999	47.876
2000	47.438
2001	47.659
2002	47.526
2003	47.004
2004	44.66
2005	47.157
2006	48.021
2007	49.396
2008	49.854
2009	49.51
2010	49.058
2011	50.223
2012	48.306
2013	48.983
2014	47.962
2015	47.317
2016	47.648
2017	48.597
2018	48.147
2019	48.751
2020	50.116
2021	49.433
2022	50.99
2023	51.757