Year % of total labor force 1991 1.721763085399449 1992 1.6698393614534284 1993 1.62335027028782 1994 1.5808277213949224 1995 1.653886633588934 1996 1.563788348355179 1997 1.4055848571658056 1998 1.3481068727772285 1999 1.2775121363652955 2000 1.279263144428809 2001 1.2256130850909739 2002 1.1758417958311065 2003 1.1288882503258382 2004 0.9858335715764465 2005 0.9472477715996174 2006 0.9101831288455237 2007 0.8745998705592192 2008 0.8405480373203329 2009 0.848320325755005 2010 0.8155149782917679 2011 0.7845422756209092 2012 0.7555206976693986 2013 0.7279836931652731 2014 0.6950650382285771 2015 0.9565045497733083 2016 0.9226227088202732 2017 1.199414685633411 2018 0.8785905065367133 2019 1.1461777836360199 2020 1.1586142973004288