Year % of total employment (modeled ILO estimate) 1991 4.25114329268293 1992 4.13478244796865 1993 4.0647041888585 1994 4.0240411117236 1995 3.88070983147515 1996 4.04308666820626 1997 4.0732791660279 1998 4.07533374286442 1999 4.01742092185711 2000 3.86992463556471 2001 3.8622244550367 2002 3.86653675229925 2003 3.94998969567905 2004 3.94115830797053 2005 3.93084603034524 2006 3.8823931211829 2007 3.86104446080165 2008 3.82372595867776 2009 3.94330941846322 2010 3.93863063888253 2011 3.88830407925123 2012 3.90242753139455 2013 3.88453071691719 2014 2.75000360703516 2015 4.27849917893662 2016 4.01851851851852 2017 4.28459523320321 2018 4.65845421995535 2019 4.93821715049055 2020 1.57819690193791 2021 0.336799588565121 2022 0.372736954206603