Year	% (modeled ILO estimate)
1991	44.985
1992	43.936
1993	43.184
1994	42.866
1995	43.093
1996	43.263
1997	43.103
1998	43.38
1999	44.468
2000	44.841
2001	45.498
2002	45.342
2003	45.159
2004	44.49
2005	45.578
2006	46.735
2007	47.84
2008	48.541
2009	49.079
2010	49.603
2011	50.978
2012	51.224
2013	51.887
2014	52.223
2015	52.4
2016	53.564
2017	54.06
2018	54.336
2019	55.048
2020	53.647
2021	53.674
2022	54.518
2023	54.881