Year	% (modeled ILO estimate)
1991	51.945
1992	51.179
1993	50.403
1994	49.613
1995	48.827
1996	48.599
1997	48.441
1998	48.337
1999	48.319
2000	47.982
2001	47.632
2002	47.753
2003	47.904
2004	46.9
2005	45.925
2006	45.39
2007	44.008
2008	43.29
2009	42.577
2010	36.825
2011	34.574
2012	30.05
2013	26.637
2014	24.472
2015	26.571
2016	25.075
2017	23.603
2018	22.158
2019	23.561
2020	21.233
2021	21.757
2022	18.697
2023	18.38