Year % of GDP 2008 1.70166003704071 2012 1.77711999416351 2013 1.69078004360199 2014 2.20005011558533 2015 2.1159999370575 2016 2.11500000953674 2017 2.66330003738403 2018 2.50391006469727 2019 2.49399995803833 2020 2.14000010490417 2021 2.53214001655579 2022 2.59500002861023 2023 2.41700005531311