Year % of GDP 1995 3.207596261064743 1996 5.2272429789973085 1997 7.614764495715505 1998 11.71301330054373 1999 17.394986074078247 2000 18.16240154722953 2001 13.62802584550149 2002 14.256475627628928 2003 16.995132697585557 2004 27.647544083200888 2005 30.71362256774959 2006 43.19135576965134 2007 49.32633149334573 2008 17.019401710102358 2009 34.330381016181185 2010 40.08982498786922 2011 26.363660611881386 2012 35.823393656503626 2013 39.65832461744368 2014 31.330318534891028 2015 28.875774577960943 2016 29.507196576924784 2017 38.3867812360926 2018 27.25681502232018 2019 25.436910446376913 2020 29.61219319476299 2021 28.9704493042357 2022 21.406942598112785