Year Percent of GDP 2005 33.061 2006 39.437 2007 44.67 2008 61.077 2009 62.039 2010 49.565 2011 41.389 2012 37.198 2013 38.553 2014 40.287 2015 41.806 2016 54.164 2017 52.866 2018 29.781 2019 20.987 2020 20.49 2021 20.068 2022 19.554 2023 18.611 2024 17.682