Year	% (modeled ILO estimate)
1991	41.836
1992	41.452
1993	41.369
1994	41.325
1995	40.984
1996	40.7
1997	40.403
1998	40.123
1999	39.864
2000	39.598
2001	37.806
2002	38.318
2003	35.623
2004	36.384
2005	35.59
2006	36.651
2007	36.414
2008	37.558
2009	32.736
2010	34.391
2011	34.86
2012	35.061
2013	33.896
2014	35.413
2015	36.801
2016	37.238
2017	37.743
2018	38.038
2019	38.215
2020	33.379
2021	37.84
2022	39.906
2023	39.932