Year	% (modeled ILO estimate)
1991	55.105
1992	54.407
1993	54.456
1994	53.554
1995	53.765
1996	52.69
1997	52.647
1998	51.82
1999	51.363
2000	52.248
2001	51.45
2002	51.716
2003	53.24
2004	51.942
2005	52.502
2006	55.531
2007	57.715
2008	58.199
2009	58.53
2010	61.291
2011	62.956
2012	64.205
2013	64.607
2014	68.453
2015	68.468
2016	68.234
2017	66.503
2018	65.685
2019	67.504
2020	67.378
2021	70.243
2022	71.002
2023	71.316