Year	% (modeled ILO estimate)
1991	55.334
1992	55.492
1993	55.318
1994	57.158
1995	57.953
1996	51.898
1997	55.104
1998	56.256
1999	55.947
2000	53.62
2001	55.387
2002	52.115
2003	49.943
2004	54.137
2005	52.709
2006	52.419
2007	51.315
2008	52.951
2009	55.289
2010	50.936
2011	50.372
2012	53.079
2013	52.509
2014	49.854
2015	48.157
2016	51.036
2017	48.273
2018	50.074
2019	50.251
2020	46.535
2021	49.824
2022	47.801
2023	49.933