Year % of GDP 1999 3.08017992973328 2000 2.64670991897583 2001 3.00112497806549 2004 3.14692997932434 2006 2.83097004890442 2008 2.72311997413635 2009 3.091085076332095 2010 2.7219500541687 2011 3.07762002944946 2012 2.88159990310669 2013 3.052984952926635 2014 3.32569003105164 2015 3.2558000087738 2016 2.95843005180359 2017 2.76899003982544 2018 3.32295989990234 2019 3.3825000524520847 2020 3.576500058174135 2021 3.94350004196167 2022 3.73600006103516