Year	% (modeled ILO estimate)
1991	61.775
1992	61.701
1993	61.662
1994	61.286
1995	61.808
1996	62.179
1997	62.844
1998	63.098
1999	63.37
2000	63.499
2001	63.685
2002	63.805
2003	63.889
2004	64.049
2005	64.092
2006	62.746
2007	61.452
2008	60.128
2009	58.762
2010	57.283
2011	55.786
2012	54.763
2013	53.801
2014	52.869
2015	51.933
2016	50.945
2017	49.967
2018	51.031
2019	52.021
2020	52.459
2021	52.581
2022	53.518
2023	53.644