Year % of GDP 2006 3.6861323141225135 2007 3.4260247972270106 2008 4.1589388278545245 2009 4.865684064319224 2010 5.623251039078983 2011 4.973676678798116 2012 7.1338148829886 2013 8.042606114469951 2014 7.09211811356117 2015 9.943302762076616 2016 10.245738095184253 2017 9.90214268336292 2018 10.321392915102653 2019 11.410396136187845 2020 12.253527917129803 2021 10.357886752864031 2022 11.209786269307024