Year	% (modeled ILO estimate)
1991	40.973
1992	40.78
1993	40.556
1994	40.272
1995	39.994
1996	39.842
1997	39.329
1998	39.07
1999	39.234
2000	39.618
2001	39.274
2002	38.683
2003	38.156
2004	34.848
2005	33.126
2006	33.602
2007	35.713
2008	37.536
2009	35.336
2010	33.23
2011	31.665
2012	31.402
2013	32.716
2014	34.752
2015	35.192
2016	38.029
2017	39.575
2018	40.16
2019	41.751
2020	42.087
2021	44.42
2022	46.669
2023	46.971