Year	% of total labor force
1991	41.658085963931626
1992	41.82877949229933
1993	41.670220431451554
1994	41.624425148028976
1995	41.82471726233963
1996	42.34713089824175
1997	42.67149154927555
1998	42.75878746497106
1999	43.168606696975246
2000	43.17993976325559
2001	43.767924112067064
2002	44.908442781821385
2003	45.269448269408166
2004	45.29355583264797
2005	44.89777110733705
2006	44.6110061903263
2007	44.15458937198068
2008	44.357016122811075
2009	44.95055021590751
2010	45.00434295497174
2011	44.20558625387934
2012	44.41919445560466
2013	44.452756789107504
2014	44.455590231337
2015	44.448260634905054
2016	44.63906130431086
2017	44.71303466743866
2018	44.69766718878911
2019	44.745726571662104
2020	44.620807087317374
2021	44.74012816888135
2022	44.48337479415578
2023	44.549449784900105