Year	% (modeled ILO estimate)
1991	55.294
1992	56.109
1993	56.629
1994	55.339
1995	54.293
1996	52.15
1997	52.736
1998	51.933
1999	47.956
2000	47.776
2001	48.413
2002	45.395
2003	44.911
2004	46.721
2005	48.92
2006	50.481
2007	50.178
2008	50.057
2009	48.959
2010	47.107
2011	46.272
2012	45.714
2013	43.837
2014	43.054
2015	42.234
2016	41.421
2017	39.991
2018	38.271
2019	35.298
2020	31.113
2021	32.29
2022	32.48
2023	33.887