Year % of GDP 1980 1.84565645890179 1981 1.96561435488843 1982 2.05125743024026 1983 1.49283027098411 1984 1.29223155573136 1985 1.65953520689263 1986 0.807505167730179 1987 0.552177362028996 1988 2.97602354735435 1989 2.73713710437441 1990 1.11438192336028 1991 1.38922350558753 1992 1.38870788658558 1993 0.977500985414262 1994 1.09498985430188 1995 0.853350672167653 1996 1.00162472163927 1997 0.969971853679339 1998 0.537067260909246 1999 0.617206953468906 2000 0.682250473694737 2001 0.714335209608195 2002 0.459805802148112 2003 0.430571953471522 2004 1.13721174341521 2005 0.981901509777394 2006 1.83143811540013 2007 1.6864723678113 2008 1.97470276622532 2009 0.704216078965934 2010 1.67975403719023 2011 2.14267004784609 2012 1.60464880529568 2013 1.1076323174832 2014 0.784766836474764 2015 0.6587242316101 2016 0.526340830586215 2017 0.749247066231762 2018 0.678372706778028 2019 0.580269555247755 2020 0.618935967577506 2021 0.917744335906696