Year % of GDP 2008 4.288016383356559 2009 4.396016049401216 2010 4.661135883824598 2011 4.964073104667628 2012 4.891801556430934 2013 5.466541556751522 2014 12.544066611708166 2015 5.4182436785502475 2016 6.137696307692308 2017 10.630151253481895 2018 25.83468443877551 2019 19.91372182741117 2020 7.048216397849462