Year % of GNI 1995 3.1132604260504664 1996 2.5633772291516834 1997 3.043861368360293 1998 3.8156451090671233 1999 2.3049643777364324 2000 2.495730169658355 2001 2.451826019174625 2002 1.7644104066680946 2003 1.1220303490285417 2004 1.5328024830621807 2005 3.0390633123513346 2006 3.879663748602507 2007 4.883925256589627 2008 5.630499037969592 2009 3.6143185880973654 2010 3.365134873110609 2011 4.435529711403245 2012 4.214824553114571 2013 5.172783616266383 2014 6.003660744400605 2015 7.214111001335212 2016 6.512428269809352 2017 7.022531777202799 2018 7.234844148808946 2019 7.621509178113346 2020 6.950537021254096 2021 7.08910031128476