Year % of GDP 1990 31.312690963822998 1991 29.2733383817258 1992 29.27333838265051 1993 31.03639600227523 1994 36.65279338115061 1995 36.455083642191056 1996 34.79249867613676 1997 29.216494845360824 1998 28.402615778806073 1999 22.8311024672997 2000 20.411222136817834 2001 22.813545307625812 2002 18.748268218343032 2003 19.161023947151115 2004 23.067613962275445 2005 22.966010964411204 2006 20.54809107874452 2007 24.282089620101228 2008 27.99632120024757 2009 26.92101616559573 2010 24.93725851300126 2011 26.846365748903807 2012 24.787297880123855 2013 27.61242943691865 2014 24.967195141808094 2015 22.222779257098647 2016 23.14257137180613 2017 21.78793522732605 2018 22.487103401962226 2019 12.322474260976064 2020 8.098177366311939 2021 5.359484343348965 2022 1.225170749328065 2023 0.8508432255394386