Year	% (modeled ILO estimate)
1991	70.053
1992	67.899
1993	64.536
1994	66.187
1995	62.774
1996	62.704
1997	61.58
1998	60.048
1999	59.911
2000	56.742
2001	55.555
2002	52.586
2003	49.905
2004	50.513
2005	50.89
2006	49.009
2007	49.372
2008	49.763
2009	49.808
2010	49.037
2011	50.562
2012	49.192
2013	50.508
2014	53.528
2015	53.637
2016	53.967
2017	55.012
2018	55.981
2019	55.621
2020	49.95
2021	53.034
2022	56.017
2023	56.132