Year	% (modeled ILO estimate)
1991	58.291
1992	59.505
1993	60.165
1994	58.792
1995	57.756
1996	56.716
1997	57.209
1998	57.177
1999	54.793
2000	55.188
2001	55.839
2002	53.496
2003	52.739
2004	54.368
2005	57.428
2006	59.276
2007	59.73
2008	60.272
2009	60.134
2010	59.31
2011	59.24
2012	58.945
2013	57.909
2014	57.925
2015	57.914
2016	57.925
2017	57.437
2018	56.029
2019	52.372
2020	47.189
2021	47.687
2022	50.503
2023	51.433