Year % of GDP 2002 5.79186010360718 2003 5.32406997680664 2004 4.66160011291504 2005 5.0168399810791 2006 4.64523983001709 2007 4.41788005828857 2008 4.470290184021 2009 5.08168983459473 2010 3.63328003883362 2011 3.08072996139526 2012 4.96799993515015 2013 3.95499992370605 2014 3.89000010490417 2015 4.64499998092651 2016 4.46999979019165 2017 3.87299990653992 2018 3.93199992179871 2019 4.20900011062622 2020 5.79500007629395 2021 4.4850001335144 2022 4.58099985122681