Year % of GDP 1994 25.60469709100614 1995 17.99835973380823 1996 13.767210715069897 1997 14.88161985878479 1998 17.880741731093412 1999 17.57289608222299 2008 49.30189450185863 2009 40.88985014676348 2010 46.82891793241493 2011 45.48135632272186 2012 41.27397307818069 2013 40.40579560688873 2014 39.89639764056386 2015 34.18370724531077 2016 34.919867869696745 2017 35.07587669787796 2018 39.41662837736603 2019 42.81407440149848 2020 35.04004651540892 2021 36.51897359747305