Year	% (modeled ILO estimate)
1991	47.828
1992	47.056
1993	46.286
1994	45.518
1995	44.752
1996	43.988
1997	43.228
1998	42.47
1999	39.7
2000	37.371
2001	35.1
2002	34.351
2003	33.61
2004	33.32
2005	33.167
2006	33.014
2007	32.862
2008	32.71
2009	28.91
2010	26.18
2011	28.52
2012	26.75
2013	27.02
2014	27.06
2015	29.25
2016	32.68
2017	32.57
2018	30.48
2019	31.65
2020	30.13
2021	30.28
2022	29.065
2023	30.215