Year % of GDP 1990 7.675394354841661 1991 14.405216563151447 1992 18.73240544664504 1993 17.015336381910686 1994 15.724802264707616 1995 14.938956608249054 1996 13.907039871613641 1997 14.916205663567982 1998 18.613555282864386 1999 20.835803272146677 2000 25.745014892961425 2001 27.104783632835066 2002 28.379667106532562 2003 32.453357604109385 2004 29.398559195544106 2006 20.254060556584776 2007 7.545456325699347 2008 7.292625655560498 2009 15.629402291307478 2010 30.306789585227435 2011 35.936098678373384 2012 37.01247804186913 2013 43.937803845411956 2014 45.33295947515409 2015 63.486258600123726 2016 74.14615641532073 2017 81.42325904759188 2018 88.23971822951529 2019 95.59885021568846 2020 115.51711583025816