Year % of GDP 1995 20.78073378542862 1996 23.483145286954993 1997 27.212380066668963 1998 30.79049189346783 1999 30.01971743287919 2000 33.68025726703212 2001 30.969435018706466 2002 32.27425284469364 2003 36.095765576897655 2004 37.21019707616942 2005 35.918952479985464 2006 40.14976188272081 2007 42.31516756097643 2008 43.09089112931141 2009 38.12554435961444 2010 42.461836850794214 2011 44.71000700934128 2012 44.98936281692202 2013 44.79843889368061 2014 46.079861127445675 2015 45.368482449814316 2016 47.27161862826833 2017 49.225537297369264 2018 50.70246686348404 2019 49.493378172176264 2020 47.333287133524294 2021 54.38246921105977 2022 61.103981464798665 2023 51.7236990771925