Year Percent of GDP 2003 20.265 2004 22.559 2005 25.487 2006 27.566 2007 26.802 2008 26.898 2009 30.013 2010 29.224 2011 29.93 2012 -2.01 2013 1.896 2014 3.46 2015 6.353 2016 11.774 2017 11.642 2018 12.595 2019 12.425 2020 12.553 2021 12.999 2022 13.666 2023 14.09 2024 14.301