Year	% (modeled ILO estimate)
1991	48.781
1992	48.089
1993	47.589
1994	46.811
1995	45.889
1996	45.154
1997	44.194
1998	43.273
1999	42.468
2000	41.746
2001	43.106
2002	40.731
2003	41.96
2004	41.474
2005	41.775
2006	41.208
2007	41.204
2008	41.267
2009	41.146
2010	41.459
2011	41.723
2012	42.164
2013	42.195
2014	42.236
2015	42.088
2016	41.737
2017	41.155
2018	40.514
2019	39.772
2020	38.353
2021	38.307
2022	39.729
2023	40.127