Year % of GDP 1960 38.91616543308296 2011 66.76400897049788 2012 65.43155676779908 2013 63.457529724176815 2014 62.000410695846796 2015 58.05717938352267 2016 55.37947937451083 2017 55.15035426080843 2018 57.43761114327599 2019 55.40972364425521 2020 52.271483257676394 2021 56.902657835543245 2022 60.9072997370784