Year % of GDP 1988 28.08062698774946 1989 30.71337585271782 1990 30.070684594874553 1991 46.38223025013185 1992 93.68651183872586 1993 58.5498138229765 1994 39.554462270982256 1995 38.282073505482245 1996 35.7852667237909 1997 34.75736741075201 1998 40.613291481312096 1999 46.417918186449775 2000 38.846609031542364 2001 41.66134645726587 2002 42.40963796531989 2003 41.201132354980835 2004 40.558489106033164 2005 40.7099919558597 2006 43.277512813167796 2007 49.35693230853999 2008 51.252380510717366 2009 46.86070805359741 2010 49.88711838066543 2011 56.86243340811794 2012 55.56892967434992 2013 56.81647189058504 2014 57.83878650187594 2015 54.61561625739817 2016 55.40754808727323 2017 58.088779111055224 2018 58.02819973353227 2019 55.92194022213454 2020 53.26216163049114 2021 62.89260781951099 2022 67.17987672843267 2023 56.30246919803752