Year % of GNI 1995 15.6549561039243 1996 15.0875509557978 1997 16.6491799417754 1998 16.5703659899243 1999 16.1009105974449 2000 18.5875587549795 2001 15.3575743823944 2002 13.7254223537162 2003 16.7423135341466 2004 17.2375724894019 2005 18.9112360160057 2006 21.1837799175306 2007 17.9572185792686 2008 11.4685376323587 2009 15.1885224905845 2010 19.7797743578227 2011 16.8711243877122 2012 18.298588976941 2013 17.1685194844151 2014 15.2642851887651 2015 16.7743525314163 2016 15.7794715398615 2017 14.0130809983371 2018 13.5529502069058 2019 13.290437395401 2020 11.8492434229743 2021 16.1504942229092