Year	% (modeled ILO estimate)
1991	32.483
1992	33.019
1993	33.639
1994	32.781
1995	31.458
1996	31.435
1997	32.731
1998	34.066
1999	34.179
2000	33.977
2001	32.274
2002	30.01
2003	29.427
2004	28.718
2005	31.523
2006	32.164
2007	32.227
2008	31.175
2009	29.657
2010	29.797
2011	29.693
2012	30.306
2013	29.516
2014	28.58
2015	28.501
2016	28.54
2017	28.38
2018	28.578
2019	29.809
2020	26.186
2021	29.651
2022	30.062
2023	31.396