Year	% (modeled ILO estimate)
1991	60.635
1992	61.798
1993	58.319
1994	59.431
1995	59.106
1996	56.554
1997	55.604
1998	55.614
1999	54.264
2000	51.564
2001	50.243
2002	51.132
2003	49.831
2004	53.413
2005	54.643
2006	54.622
2007	56.56
2008	56.704
2009	56.759
2010	54.493
2011	55.317
2012	55.822
2013	55.712
2014	55.884
2015	54.566
2016	55.051
2017	54.129
2018	54.285
2019	52.91
2020	53.442
2021	52.343
2022	53.97
2023	56.48