Year	% (modeled ILO estimate)
1991	48.106
1992	47.654
1993	47.581
1994	48.081
1995	49.194
1996	50.094
1997	51.32
1998	51.994
1999	51.663
2000	51.38
2001	51.165
2002	50.76
2003	50.462
2004	50.118
2005	49.81
2006	51.438
2007	53.047
2008	54.615
2009	53.043
2010	51.5
2011	53.012
2012	54.559
2013	54.368
2014	54.241
2015	54.014
2016	53.847
2017	53.654
2018	55.538
2019	56.241
2020	57.2
2021	56.994
2022	57.071
2023	57.05