Year	% (modeled ILO estimate)
1991	48.727
1992	49.148
1993	43.74
1994	42.001
1995	36.965
1996	35.767
1997	32.537
1998	31.509
1999	30.04
2000	28.154
2001	30.449
2002	28.476
2003	26.18
2004	20.619
2005	21.442
2006	22.213
2007	22.244
2008	20.689
2009	24.403
2010	20.434
2011	18.582
2012	20.148
2013	19.541
2014	18.957
2015	28.975
2016	25.548
2017	24.643
2018	28.553
2019	26.439
2020	24.49
2021	29.127
2022	28.692
2023	25.827