Year % of GDP 1997 -2.973655843157917 1998 15.831736080524085 1999 20.448042353626054 2000 10.341746006299662 2001 18.603400566132308 2002 19.07470677925273 2003 16.35351713190322 2004 20.95744792872726 2005 19.057308282559585 2006 11.588688507068106 2007 11.012219098408112 2008 2.934098501808866 2009 0.6570041167702 2010 11.28523202247614 2011 11.21352204169705 2012 14.884187552402198 2013 16.247688037403567 2014 15.725043092065954 2015 15.232876280504486 2016 16.70391316337946 2017 17.219530419829592 2018 21.320568111960167 2019 21.247359230455665 2020 12.093255821542433 2021 10.415709632173192 2022 19.59418110528319 2023 22.65972854940827