Year % of GDP 1995 0.669092065367452 1996 0.527409241981988 1997 0.333527259917736 1998 0.195087574224892 1999 0.311891670595921 2000 2.33274311334293 2001 1.50240352241228 2002 0.628709984358027 2003 0.535968883702967 2004 1.75377809041674 2005 1.24346302195652 2006 1.500776590768 2007 1.55422939890246 2008 2.85101542369955 2009 1.29420135500539 2010 2.51068899120357 2011 3.35044641406988 2012 2.77478070010415 2013 2.05963239192195 2014 1.89442302636645 2015 1.27718856590432 2016 1.17155898842791 2017 1.52263044010001 2018 1.54067953539602 2019 1.19461693747908 2020 0.947608509343353 2021 1.74631766481948