Year % of GDP 1995 30.95600676818951 1996 24.842105263157897 1997 24.314369073668853 1998 27.084870848708487 1999 20.65012970168612 2000 23.714642699524077 2001 19.189308613710132 2002 12.207158925876357 2003 14.646462382753569 2004 17.24833362114908 2005 -1.6529541956184475 2006 13.104232174194308 2007 2.917363693303009 2008 15.345106144333668 2009 11.174913427063258 2010 4.648618753584691 2011 -1.2401477582126044 2012 5.750847588333218 2013 6.982150530113153 2014 10.710053386569534 2015 14.988399580252121 2016 15.529237080798932 2017 14.310951182209406 2018 12.338730620560485 2019 16.72200638966165 2020 4.65572019227165 2021 13.461261819641118 2022 20.88971941083679