Year	% (modeled ILO estimate)
1991	44.542
1992	44.837
1993	45.655
1994	46.564
1995	47.623
1996	48.257
1997	49.664
1998	48.982
1999	49.107
2000	50.474
2001	50.635
2002	48.735
2003	49.229
2004	49.685
2005	50.88
2006	52.829
2007	51.92
2008	54.262
2009	52.763
2010	55.3
2011	56.112
2012	56.943
2013	57.094
2014	58.449
2015	59.798
2016	59.49
2017	58.97
2018	59.223
2019	60.338
2020	59.704
2021	60.944
2022	61.148
2023	59.526