Year % of GDP 1983 37.68857800923382 1984 38.43333629847928 1985 40.46641468246197 1986 43.12114457856951 1997 49.60347197955055 1998 49.04992897262592 1999 52.30566362145453 2000 52.744040075038754 2001 50.908892248002836 2002 54.74549687601914 2003 58.3766296120431 2004 57.56946860103952 2005 56.1666809435565 2006 58.03232788005187 2007 61.105481027841535 2008 60.82915032408423 2009 70.75734178912711 2010 72.03263885687399 2011 73.12586753531788 2012 77.5893512636892 2013 82.64390525721295 2014 88.66916273370367 2015 97.91982251705713 2016 99.56245514618145 2017 99.04764421910548 2018 103.00172554979737 2019 107.04743747037618 2020 121.36355308473689 2021 118.26418270124934 2022 131.51098094374606 2023 135.34175249265792