Year % of GDP 2008 8.67057037353516 2009 12.9034595489502 2010 11.1076097488403 2011 10.1947298049927 2012 7.16699981689453 2013 5.68100023269653 2014 7.65999984741211 2015 6.29500007629395 2016 6.01900005340576 2017 5.20900011062622 2018 4.88100004196167 2019 4.17700004577637 2020 3.66000008583069 2021 2.97399997711182