Year	% (modeled ILO estimate)
1991	53.81
1992	54.938
1993	55.974
1994	57.114
1995	57.395
1996	57.167
1997	56.801
1998	56.778
1999	56.679
2000	56.475
2001	56.253
2002	56.304
2003	55.986
2004	55.662
2005	55.74
2006	55.624
2007	55.177
2008	54.71
2009	54.601
2010	54.719
2011	53.42
2012	48.863
2013	50.139
2014	46.921
2015	46.219
2016	44.954
2017	42.28
2018	44.073
2019	41.683
2020	44.644
2021	44.172
2022	43.636
2023	43.638