Year % of GDP 2010 2.75335717 2011 2.11995435 2012 1.99866605 2013 2.01785898 2014 2.73114586 2015 1.55090201 2016 1.58191299 2017 1.59848082 2018 1.59427941 2019 0.46116894 2020 0.65268922 2021 0.91339546