Year	% (modeled ILO estimate)
1991	42.113
1992	42.804
1993	42.383
1994	41.644
1995	41.045
1996	40.593
1997	42.284
1998	41.619
1999	38.745
2000	33.78
2001	33.892
2002	32.631
2003	30.322
2004	35.476
2005	36.413
2006	36.659
2007	35.674
2008	37.693
2009	36.167
2010	35.211
2011	32.67
2012	30.432
2013	30.288
2014	30.452
2015	31.648
2016	30.576
2017	35.255
2018	34.473
2019	33.081
2020	28.749
2021	31.383
2022	33.371
2023	32.199