Year	% (modeled ILO estimate)
1991	55.293
1992	55.664
1993	55.941
1994	55.219
1995	54.486
1996	53.783
1997	53.049
1998	52.328
1999	51.592
2000	50.852
2001	50.126
2002	49.408
2003	48.707
2004	48.036
2005	47.325
2006	46.558
2007	45.758
2008	45.01
2009	44.291
2010	43.585
2011	42.86
2012	42.152
2013	41.426
2014	40.728
2015	40.013
2016	39.296
2017	38.59
2018	37.898
2019	37.492
2020	37.01
2021	37.003
2022	38.916
2023	39.156