Year % of GDP 2000 9.364711142781928 2001 9.832979107419934 2002 10.2529666063488 2003 10.423308817570318 2004 10.34349041998687 2005 10.364362954614124 2006 10.396824566750135 2007 10.332732816792534 2008 10.464333267590675 2009 11.465332301377787 2010 11.314902279289061 2011 11.266066912771565 2012 11.368761056547859 2013 11.380284406139815 2014 11.591178752524554 2015 12.054857429380364 2016 12.232791703032833 2017 12.149578682173082 2018 12.063661230260305 2019 12.269481537816473 2020 13.736422299429352 2021 13.128055476014751