Year	% (modeled ILO estimate)
1991	31.183
1992	31.105
1993	31.042
1994	30.87
1995	30.58
1996	30.102
1997	29.471
1998	28.805
1999	28.218
2000	27.791
2001	27.396
2002	27.058
2003	26.809
2004	26.733
2005	26.648
2006	26.432
2007	26.149
2008	25.934
2009	25.602
2010	25.243
2011	25.146
2012	24.955
2013	24.73
2014	24.496
2015	24.191
2016	24.057
2017	23.818
2018	23.72
2019	23.489
2020	21.224
2021	21.76
2022	23.475
2023	23.908