Year	% (modeled ILO estimate)
1991	62.801614871843014
1992	62.27863595843478
1993	62.1933218973152
1994	62.666104197426705
1995	63.33811661554258
1996	64.13361830127444
1997	65.42151162790697
1998	62.70430309201007
1999	63.979199027487
2000	66.25999272031167
2001	67.12733254233632
2002	67.05208486321213
2003	66.02187387049706
2004	67.35629121428096
2005	67.80498253035435
2006	68.41857651723906
2007	68.38953629195038
2008	68.62135447781458
2009	68.02703405250844
2010	68.38977364536404
2011	68.51651881518336
2012	68.69523679541423
2013	69.09276944065485
2014	69.919039265956
2015	70.56831367892705
2016	71.0244100344851
2017	71.67414454835396
2018	72.16097322543855
2019	73.1568560734944
2020	73.10017211703959
2021	73.82493047333205
2022	74.72266028604058
2023	76.04646723569033
