Year	% (modeled ILO estimate)
1991	60.02
1992	59.823
1993	58.767
1994	58.97
1995	59.037
1996	58.858
1997	58.164
1998	57.094
1999	55.684
2000	55.109
2001	55.113
2002	55.409
2003	54.797
2004	54.268
2005	54.653
2006	55.029
2007	55.643
2008	55.932
2009	54.772
2010	54.186
2011	54.351
2012	54.547
2013	55.16
2014	55.686
2015	56.419
2016	57.553
2017	58.48
2018	59.197
2019	59.16
2020	58.265
2021	58.155
2022	58.57
2023	58.552