Year % of GDP 2011 12.366256757314407 2012 13.174407770412808 2013 13.80047989184789 2014 13.4703929830448 2015 13.557754032473875 2016 13.43296306158285 2017 11.641747402383187 2018 14.094192176137685 2019 12.616227036275976 2020 14.785867912564163