Year % of total employment (modeled ILO estimate) 1991 30.589694108239257 1992 30.84881781398907 1993 31.27655615557382 1994 31.561728092376775 1995 31.951924413078824 1996 32.31434702093856 1997 32.767788925281096 1998 33.006588020046294 1999 33.17631732904558 2000 33.460018429696035 2001 34.11288042938184 2002 34.83328542084106 2003 35.44462933768952 2004 36.368974805305825 2005 36.94728758501721 2006 37.20977465616728 2007 37.278149071363735 2008 37.38729529822701 2009 37.524146423015694 2010 37.52984360248961 2011 38.08931930795879 2012 38.696934822546964 2013 39.208597141547436 2014 39.71543481116084 2015 40.43407841093263 2016 41.14338041396768 2017 41.82055609773326 2018 42.63746365890551 2019 43.261964278229726 2020 41.91869507736285 2021 42.105096066969736 2022 42.155654629067705