Year	% (modeled ILO estimate)
1991	76.258
1992	76.214
1993	74.513
1994	72.764
1995	71.015
1996	69.16
1997	67.31
1998	65.347
1999	63.36
2000	61.313
2001	59.222
2002	57.07
2003	54.965
2004	52.844
2005	50.694
2006	48.552
2007	46.413
2008	44.286
2009	42.146
2010	40.014
2011	36.551
2012	35.705
2013	34.899
2014	34.063
2015	33.137
2016	32.216
2017	31.346
2018	30.541
2019	30.243
2020	29.833
2021	29.751
2022	29.387
2023	29.609