Year	% (modeled ILO estimate)
1991	51.488
1992	51.435
1993	52.68
1994	52.225
1995	50.681
1996	48.086
1997	46.622
1998	51.053
1999	49.432
2000	48.192
2001	46.947
2002	45.703
2003	48.746
2004	46.924
2005	47.408
2006	47.915
2007	47.149
2008	46.013
2009	44.834
2010	43.613
2011	43.499
2012	44.036
2013	43.461
2014	42.698
2015	41.994
2016	42.702
2017	43.133
2018	42.736
2019	43.956
2020	41.013
2021	43.296
2022	43.691
2023	43.599