Year % of GDP 1977 30.83389736445573 1982 31.50493247880647 1983 33.092181347601084 1984 34.17078930312078 1985 36.00038886502826 1986 38.70931250374676 1995 44.71293033379559 1996 46.09118811857575 1997 45.69515519774312 1998 45.110607320912294 1999 49.29963297698793 2000 49.22079689507272 2001 47.883539829905494 2002 51.16475588626554 2003 54.435919334148636 2004 53.827699955801585 2005 52.67935648759342 2006 54.38533947327714 2007 57.627280914954795 2008 57.7112305731569 2009 67.08684322729037 2010 68.403637512099 2011 69.40913950301115 2012 73.7410862821011 2013 78.14271168749018 2014 83.70332755338352 2015 92.34028654260379 2016 94.02985661360746 2017 93.8548608252938 2018 97.46922835175071 2019 101.31319544293925 2020 114.8677496186202 2021 112.64336220370593 2022 124.06420726423755 2023 129.59798654256798