Year	% (modeled ILO estimate)
1991	45.35
1992	44.67
1993	44
1994	43.568
1995	43.116
1996	42.475
1997	42.396
1998	42.906
1999	47.523
2000	46.426
2001	45.125
2002	46.032
2003	46.506
2004	46.724
2005	46.665
2006	47.27
2007	46.507
2008	45.631
2009	44.862
2010	44.14
2011	43.759
2012	43.366
2013	43.342
2014	43.103
2015	43.015
2016	42.89
2017	43.499
2018	43.805
2019	42.333
2020	41.939
2021	41.279
2022	41.806
2023	42.04