Year % of GDP 2000 4.82626629 2001 6.60538721 2002 10.10495281 2003 7.075634 2004 7.72383881 2005 9.01593494 2006 8.00584698 2007 7.18298769 2008 5.50597048 2009 6.60598898 2010 4.66139841 2011 5.02313328 2012 4.87480497 2013 4.57886171 2014 4.88791895 2015 4.44578695 2016 4.40253973 2017 4.14992523 2018 3.77378345 2019 4.32405567 2020 4.79699087 2021 4.76345396