Year	% (modeled ILO estimate)
1991	58.329
1992	57.032
1993	53.709
1994	55.282
1995	51.108
1996	46.471
1997	37.99
1998	38.644
1999	33.194
2000	33.617
2001	31.802
2002	30.83
2003	36.009
2004	34.125
2005	34.072
2006	36.52
2007	38.186
2008	38.734
2009	29.918
2010	26.391
2011	33.104
2012	34.206
2013	33.946
2014	33.229
2015	39.412
2016	38.851
2017	42.839
2018	43.496
2019	41.43
2020	36.974
2021	33.153
2022	32.779
2023	35.097