Year	% (modeled ILO estimate)
1991	31.079
1992	31.239
1993	31.256
1994	31.086
1995	30.866
1996	30.48
1997	30.116
1998	30.379
1999	30.219
2000	29.913
2001	29.826
2002	29.767
2003	29.543
2004	29.192
2005	29.615
2006	28.908
2007	28.8
2008	27.665
2009	28.137
2010	28.282
2011	29.334
2012	29.017
2013	28.415
2014	29.086
2015	28.197
2016	27.537
2017	25.112
2018	25.01
2019	24.82
2020	21.198
2021	21.097
2022	23.53
2023	24.072