Year	% (modeled ILO estimate)
1991	62.318
1992	59.728
1993	57.572
1994	58.307
1995	58.826
1996	59.523
1997	60.275
1998	60.58
1999	57.538
2000	53.219
2001	51.605
2002	51.755
2003	51.887
2004	50.853
2005	49.623
2006	48.284
2007	46.692
2008	42.633
2009	43.538
2010	39.885
2011	37.606
2012	30.208
2013	28.397
2014	27.581
2015	27.551
2016	27.8
2017	28.024
2018	28.239
2019	28.46
2020	25.123
2021	26.26
2022	26.979
2023	27.565