Year	% (modeled ILO estimate)
1991	45.719
1992	45.06
1993	44.408
1994	43.737
1995	43.078
1996	43.477
1997	44.075
1998	44.815
1999	45.627
2000	46.525
2001	47.673
2002	48.97
2003	50.35
2004	51.673
2005	52.845
2006	53.044
2007	53.183
2008	53.277
2009	53.33
2010	40.172
2011	40.575
2012	36.456
2013	31.346
2014	28.536
2015	30.784
2016	28.777
2017	26.814
2018	24.9
2019	27.668
2020	28.715
2021	28.849
2022	27.965
2023	27.371