Year % of GDP 1993 5.504748504175744 1994 4.8135396653679186 1995 7.068751740357975 1996 13.966191031951555 1997 17.270447468009113 1998 16.920546953068023 1999 18.10021535123392 2000 18.083025601430013 2001 23.04066423388826 2002 20.87674381850509 2003 21.733430007168046 2004 23.725100605256266 2005 20.57396208775377 2006 19.982312206220072 2007 18.66573720060762 2008 17.028238581045464 2009 21.365456863568355 2010 24.698451935306963 2011 26.49430800242371 2012 27.359900338437303 2013 28.453255587498884 2014 28.889231267927862 2015 29.589642445670037 2016 31.04414897929803 2017 33.69306054939673 2018 35.270090101587506 2019 36.37704106636001 2020 16.45852126852078 2021 22.14577079120666 2022 35.511733530000484 2023 36.978154737928456