Year	% (modeled ILO estimate)
1991	37.579
1992	37.612
1993	37.638
1994	37.627
1995	37.462
1996	37.26
1997	37.003
1998	36.879
1999	36.771
2000	36.576
2001	36.44
2002	37.107
2003	37.778
2004	38.454
2005	39.135
2006	39.82
2007	40.32
2008	39.53
2009	39.81
2010	39.27
2011	38.47
2012	37.46
2013	36.08
2014	34.2
2015	38.84
2016	38.11
2017	39.7
2018	40.2
2019	39.12
2020	36.925
2021	39.558
2022	35.109
2023	36.801