Year	% (modeled ILO estimate)
1991	47.777
1992	47.26
1993	47.041
1994	46.245
1995	45.648
1996	45.797
1997	45.916
1998	46.044
1999	46.482
2000	46.009
2001	44.146
2002	43.659
2003	43.146
2004	42.822
2005	42.461
2006	42.067
2007	40.524
2008	38.825
2009	39.445
2010	39.024
2011	39.663
2012	33.79
2013	32.333
2014	32.357
2015	32.631
2016	32.861
2017	32.995
2018	33.086
2019	33.189
2020	31.075
2021	31.402
2022	33.035
2023	33.443