Year	% (modeled ILO estimate)
1991	60.288
1992	60.494
1993	60.355
1994	60.127
1995	59.861
1996	59.685
1997	59.413
1998	60.589
1999	61.76
2000	58.895
2001	58.082
2002	57.277
2003	56.471
2004	55.661
2005	54.848
2006	61.428
2007	59.849
2008	57.336
2009	56.165
2010	58.124
2011	60.084
2012	53.355
2013	52.686
2014	59.572
2015	53.287
2016	49.947
2017	50.673
2018	54.837
2019	56.094
2020	57.006
2021	49.662
2022	49.521
2023	51.265