Year	% (modeled ILO estimate)
1991	46.755
1992	46.604
1993	46.489
1994	46.404
1995	46.34
1996	46.01
1997	45.416
1998	44.83
1999	44.235
2000	43.619
2001	43.782
2002	44.044
2003	44.378
2004	43.621
2005	42.881
2006	43.222
2007	42.026
2008	40.87
2009	39.758
2010	40.383
2011	39.088
2012	37.812
2013	36.553
2014	35.629
2015	34.723
2016	33.837
2017	35.521
2018	35.607
2019	35.616
2020	34.255
2021	34.172
2022	34.14
2023	34.058