Year	% (modeled ILO estimate)
1991	47.417
1992	48.679
1993	48.431
1994	47.828
1995	46.863
1996	43.471
1997	42.163
1998	39.872
1999	37.553
2000	36.877
2001	36.07
2002	32.949
2003	28.969
2004	31.623
2005	26.446
2006	25.865
2007	24.954
2008	24.732
2009	25.821
2010	25.54
2011	25.836
2012	25.488
2013	24.712
2014	23.961
2015	25.176
2016	21.816
2017	25.014
2018	24.134
2019	23.29
2020	23.6
2021	20.429
2022	19.075
2023	19.481