Year	% (modeled ILO estimate)
1991	36.77
1992	36.629
1993	36.558
1994	36.608
1995	36.429
1996	36.531
1997	36.12
1998	35.687
1999	35.508
2000	35.971
2001	28.758
2002	26.049
2003	29.845
2004	29.349
2005	30.904
2006	31.286
2007	32.623
2008	30.358
2009	31.446
2010	31.432
2011	34.081
2012	33.677
2013	33.486
2014	33.473
2015	33.857
2016	33.291
2017	32.701
2018	32.04
2019	33.052
2020	30.341
2021	31.925
2022	34.003