Year % of GDP 2001 -0.06666664942626087 2002 -0.058064531902611266 2003 -0.05639999390368142 2004 -0.051305787585750766 2005 -0.049835027314228425 2006 -0.04391711443231771 2007 -0.0388537261065432 2008 5.295152569318443 2009 6.236690785523969 2010 1.4179340977044632 2011 -0.3038186580530841 2012 3.3677036872628645 2013 0.8726977275000001 2014 0.7739741860465117 2015 0.81495306122449 2016 0.7206503571428571 2017 0.6625939906898012 2018 0.6224312870058291 2019 0.5521883553019269 2020 0.19324943278691142 2021 0.33130051144257994