Year % of GDP 1995 36.48713008065106 1996 27.577574090985802 1997 22.615483572470367 1998 24.437042918068705 1999 22.849354648244134 2000 17.280555886287296 2001 21.135713661331597 2002 16.049882742069325 2003 13.508367118857963 2004 13.553648470678976 2005 13.299818892625325 2006 16.273325736494844 2007 20.4468711883162 2008 31.52050416533112 2009 45.60816811179288 2010 34.77475246532763 2011 34.978871589094865 2012 31.5177312017641 2013 33.33154740605475 2014 35.67555320051761 2015 40.94465991620175 2016 39.16230805608631 2017 32.186521091276575 2018 30.64644052372359 2019 33.692733933433324 2020 40.0699484385323 2021 25.862960999246653 2022 21.760579446940785 2023 25.265253795762412