Year % of total employment 2000 11.06 2001 11.38 2002 11.86 2003 12.67 2004 13.41 2005 14.21 2006 13.91 2007 14.63 2008 16.34 2009 15.23 2010 17.11 2011 20.73 2012 16.53 2013 20.47 2014 17.23 2015 16.94 2016 18.4 2017 17.84 2018 20.58 2019 21.17 2020 24.88 2021 25.96 2022 30 2023 25.03