Year	% (modeled ILO estimate)
1991	76.078
1992	75.123
1993	74.231
1994	73.21
1995	72.062
1996	70.917
1997	66.853
1998	64.114
1999	61.791
2000	57.056
2001	61.955
2002	59.374
2003	57.142
2004	55.565
2005	55.404
2006	55.241
2007	55.074
2008	56.318
2009	57.541
2010	55.573
2011	52.512
2012	51.501
2013	53.922
2014	54.312
2015	55.188
2016	53.218
2017	52.88
2018	51.197
2019	54.161
2020	49.829
2021	43.232
2022	41.568
2023	44.871