Year % of GNI 1988 0.0014886554365746026 1989 0.0012730553377209987 1990 0.01696083353594713 1991 0.06689787086240162 1992 0.04183899976371158 1993 0.03210563263319461 1994 0.22542021518475674 1995 0.006958124533772498 1996 0.013796816808553455 1997 0.005366026588158928 1998 0.004995137165639874 1999 0.03470589294600164 2000 0.1808165769916517 2001 0.4806767081130861 2002 0.9486532223339307 2003 0.9568390914635597 2004 0.6797279370550541 2005 0.5830795457143669 2006 0.9136216222522369 2007 0.8103448593131369 2008 0.1815156966440877 2009 0.640043366066273 2010 1.318240117959508 2011 2.562227895654553 2012 2.14619926714087 2013 1.6073276662648541 2014 1.0374674176690666 2015 0.9740827741699117 2016 1.221765474500278 2017 1.0557600157015867 2018 0.843159763132064 2019 0.977190395868479 2020 1.0297350767565079 2021 3.340368553825068