Year	% (modeled ILO estimate)
1991	60.886
1992	52.441
1993	42.826
1994	41.755
1995	43.116
1996	42.074
1997	41.783
1998	43.865
1999	44.352
2000	47.64
2001	46.248
2002	43.969
2003	43.392
2004	39.571
2005	38.962
2006	40.315
2007	42.184
2008	42.17
2009	38.256
2010	38.853
2011	40.919
2012	40.165
2013	41.696
2014	42.808
2015	43.914
2016	44.477
2017	44.893
2018	44.647
2019	43.916
2020	39.563
2021	40.691
2022	44.579
2023	45.552