Year	% (modeled ILO estimate)
1991	46.308
1992	46.227
1993	44.932
1994	44.077
1995	44.796
1996	44.293
1997	43.81
1998	43.592
1999	42.413
2000	42.246
2001	42.079
2002	41.92
2003	41.76
2004	41.591
2005	41.42
2006	41.247
2007	41.075
2008	40.016
2009	40.734
2010	40.035
2011	39.178
2012	38.179
2013	37.46
2014	36.707
2015	35.962
2016	35.449
2017	34.349
2018	33.426
2019	32.6
2020	30.043
2021	26.527
2022	31.371
2023	31.645