Year % of GDP 2000 2.4330930520710194 2001 2.6656188426900598 2002 2.6050517612668167 2003 2.492988723830541 2004 2.323365593685881 2005 2.194388871364915 2006 2.2289541168436298 2007 2.214514655201261 2008 2.138246532095045 2009 2.691098291679329 2010 2.4565064584229828 2011 2.4568114105358028 2012 2.4571482578394974 2013 2.635343093647132 2014 2.99975489182399 2015 3.239576017103218 2016 3.4799395633955252 2017 3.383309283710264 2018 3.1950514399759498 2019 3.21510184587664 2020 3.855281440088479 2021 3.6756663612641836