Year % of GDP 1994 17.574191535997304 1995 6.0622682306038564 1996 6.413263257210473 1997 8.257813128697217 1998 16.093072998927596 1999 9.243055850768522 2000 8.786101963038385 2001 8.15667290312813 2002 9.044577459513434 2003 11.714901481205969 2004 13.858272756732104 2005 15.466636441458126 2006 19.475727099549623 2007 23.65914601200223 2008 27.221629807351523 2009 34.183747351174915 2010 40.846001661330305 2011 37.26827085876092 2012 20.74536191098628 2013 21.452600126586333 2014 22.112936720485486 2015 23.96728128128128 2016 21.67873068700039 2017 22.25170594242917 2018 23.089654185742315 2019 24.210365020930443 2020 26.114772810761348 2021 24.10683009288836