Year	% (modeled ILO estimate)
1991	56.819
1992	56.057
1993	56.505
1994	57.011
1995	57.264
1996	56.384
1997	55.606
1998	56.201
1999	55.316
2000	55.258
2001	55.584
2002	52.116
2003	51.633
2004	50.843
2005	52.11
2006	52.499
2007	53.88
2008	54.241
2009	52.057
2010	50.22
2011	53.179
2012	52.495
2013	52.48
2014	52.42
2015	52.796
2016	52.305
2017	52.075
2018	52.086
2019	51.649
2020	51.158
2021	50.838
2022	51.84
2023	51.914