Year	% (modeled ILO estimate)
1991	55.939
1992	55.091
1993	52.772
1994	49.759
1995	48.647
1996	47.819
1997	45.776
1998	44.416
1999	47.437
2000	48.955
2001	48.874
2002	50.148
2003	49.769
2004	50.529
2005	51.224
2006	51.737
2007	52.871
2008	52.705
2009	51.934
2010	52.136
2011	52.828
2012	53.34
2013	53.032
2014	53.108
2015	52.605
2016	52.739
2017	52.575
2018	52.863
2019	52.572
2020	51.774
2021	52.625
2022	53.308
2023	52.693