Year	% (modeled ILO estimate)
1991	41.506
1992	41.199
1993	42.573
1994	43.966
1995	46.766
1996	49.108
1997	51.589
1998	52.204
1999	54.774
2000	50.892
2001	55.636
2002	57.142
2003	59.037
2004	59.649
2005	61.119
2006	64.292
2007	66.896
2008	67.048
2009	67.651
2010	69.066
2011	68.534
2012	68.336
2013	67.492
2014	67.007
2015	65.459
2016	65.093
2017	66.74
2018	67.202
2019	67.476
2020	55.732
2021	61.287
2022	63.181
2023	63.125