Year	% (modeled ILO estimate)
1991	44.017
1992	44.729
1993	44.341
1994	43.631
1995	43.061
1996	42.63
1997	46.063
1998	43.96
1999	40.408
2000	37.294
2001	37.371
2002	36.645
2003	35.231
2004	40.417
2005	40.555
2006	40.634
2007	41.968
2008	42.942
2009	40.958
2010	39.978
2011	37.49
2012	34.453
2013	33.849
2014	33.703
2015	35.414
2016	33.775
2017	39.132
2018	38.573
2019	36.226
2020	31.467
2021	33.858
2022	35.892
2023	36.341