Year % of total employment (modeled ILO estimate) 1991 35.0278214588121 1992 34.9549869242222 1993 34.8648018770294 1994 34.693515215901 1995 34.5546019201351 1996 34.3897295249335 1997 34.1114448583427 1998 33.7765611881821 1999 33.3287342132176 2000 32.9537610931117 2001 32.4669630149984 2002 31.5496085706866 2003 30.5346986565276 2004 30.3050836880465 2005 28.8929615027945 2006 29.1529974099845 2007 29.6059008731459 2008 28.1594324548686 2009 28.6620708892398 2010 29.6899422097797 2011 30.7226037890388 2012 31.6778717559459 2013 31.5442972285355 2014 31.390280813597 2015 30.8913690386459 2016 30.2915601471934 2017 29.6444096490195 2018 29.0370843829952 2019 28.4099718888109 2020 28.5473421036295 2021 28.2941802044251 2022 27.7032338805973