Year	% (modeled ILO estimate)
1991	32.777
1992	33.157
1993	33.092
1994	32.647
1995	32.937
1996	33.258
1997	33.615
1998	34.193
1999	33.567
2000	33.511
2001	33.414
2002	33.307
2003	33.213
2004	33.126
2005	33.044
2006	32.962
2007	32.876
2008	32.789
2009	32.711
2010	32.618
2011	32.512
2012	32.418
2013	32.329
2014	34.312
2015	33.438
2016	32.568
2017	34.833
2018	36.238
2019	37.473
2020	36.623
2021	38.53
2022	38.352
2023	38.102