Year Percent of GDP (Units) 2002 345.977 2003 270.602 2004 244.967 2005 206.356 2006 22.985 2007 20.137 2008 19.057 2009 16.247 2010 7.697 2011 7.501 2012 6.759 2013 6.904 2014 8.700 2015 9.154 2016 8.437 2017 7.998 2018 7.384 2019 6.350 2020 7.797 2021 11.513 2022 10.925