Year	% (modeled ILO estimate)
1991	62.254
1992	57.972
1993	56.007
1994	54.037
1995	52.052
1996	50.059
1997	48.065
1998	46.079
1999	44.104
2000	42.144
2001	43.129
2002	41.003
2003	42.543
2004	45.608
2005	46.75
2006	45.119
2007	44.054
2008	43.549
2009	42.236
2010	41.163
2011	41.238
2012	42.755
2013	40.691
2014	41.053
2015	36.908
2016	35.845
2017	33.424
2018	36.809
2019	37.758
2020	40.123
2021	43.904
2022	43.245
2023	45.248