Year	% (modeled ILO estimate)
1991	42.965
1992	43.466
1993	47.742
1994	51.551
1995	52.497
1996	52.104
1997	50.328
1998	47.535
1999	47.501
2000	48.259
2001	46.71
2002	42.316
2003	41.612
2004	43.22
2005	45.823
2006	45.884
2007	46.552
2008	47.238
2009	44.984
2010	45.186
2011	44.472
2012	46.168
2013	47.038
2014	47.044
2015	46.987
2016	46.922
2017	47.461
2018	46.366
2019	45.516
2020	41.493
2021	42.251
2022	44.186
2023	44.812