Year % of GDP 1998 5.403915491121429 1999 19.06535087040706 2000 17.709021680229796 2003 52.53541953337899 2008 65.24508030569477 2009 68.9990033374937 2010 72.45266992611121 2011 62.860132822205316 2012 65.22769588316412 2013 67.10291194564293 2014 47.976169516046006 2015 53.27858747371672 2016 66.9071609125066 2017 66.72724784721471 2018 71.6505702481057 2019 72.70387857708222 2020 91.15660694497365 2021 80.36665161740878 2022 70.14018401149143