Year % of GDP 1997 9.032947116585797 1998 13.478274788936362 1999 12.566385038009564 2000 15.277017673783682 2001 16.579989494839673 2002 23.745960218891852 2003 24.073558079220064 2004 28.118176938778 2005 21.81625590794229 2006 38.45326278796916 2007 60.04031687812225 2008 21.15365911438038 2009 24.009222535634247 2010 19.55754857616024 2011 12.263252110288185 2012 13.901152367656072 2013 14.72339817881905 2014 15.039566294716126 2015 13.999858856586329 2016 11.755227245251593 2017 13.003616025808345 2018 13.41233668544756 2019 14.568463715858687 2020 15.722758707672687 2021 17.42469090699128 2022 13.604390915704858