Year	% (modeled ILO estimate)
1991	55.363
1992	52.993
1993	48.098
1994	51.162
1995	48.617
1996	48.549
1997	47.038
1998	46.012
1999	46.65
2000	42.527
2001	42.114
2002	40.861
2003	38.387
2004	37.767
2005	37.72
2006	36.262
2007	36.484
2008	37.135
2009	37.438
2010	37.37
2011	38.471
2012	37.373
2013	38.823
2014	40.791
2015	41.779
2016	42.338
2017	43.219
2018	43.81
2019	44.281
2020	38.982
2021	41.682
2022	43.846
2023	44.056