Year % of GNI 2000 11.517763861660793 2001 8.20128336989879 2002 6.101959785304352 2003 3.5119262033120573 2004 11.805724844938606 2005 7.529503002378728 2006 10.524044794849976 2007 12.89733675441387 2008 11.04216899386837 2009 9.128156556153387 2010 8.510457380293511 2011 7.926327204109157 2012 6.593038059487241 2013 8.54413362479698 2014 9.475264100731485 2015 11.66923573605549 2016 13.464522750276135 2017 15.728131812550208 2018 18.32913263298242 2019 20.176391217514965 2020 17.95786066661189 2021 22.324723216443502 2022 23.550695511017004 2023 18.198820555462497