Year	% (modeled ILO estimate)
1991	45.169
1992	43.637
1993	42.117
1994	40.612
1995	39.124
1996	37.656
1997	36.211
1998	34.79
1999	37.59
2000	32.71
2001	27.92
2002	27.45
2003	28.81
2004	19.37
2005	20.59
2006	23.34
2007	22.35
2008	25.29
2009	25.85
2010	25.43
2011	24.08
2012	26.06
2013	27.02
2014	29.59
2015	30.78
2016	31.85
2017	32.17
2018	34.08
2019	35.65
2020	34.19
2021	34.34
2022	36.104
2023	33.419