Year % of GDP 2006 2.472918874568221 2007 2.899037311120088 2008 3.264185338468007 2009 6.5036240171285655 2010 4.833317233292335 2011 4.223052616811159 2012 3.25019907444518 2013 4.335230687468275 2014 4.693104651291343 2015 5.199285714675388 2016 7.142803861730474 2017 7.640134571485325 2018 4.806342607555475 2019 6.150955658351936 2020 9.435539395495523 2021 5.547035195968306