Year % of GNI 1995 2.92929956539757 1996 2.34038694366961 1997 2.19602734387015 1998 2.06744464585961 1999 1.91765645841501 2000 1.66757087165984 2001 1.80358066968682 2002 2.25374533404715 2003 2.51602662366868 2004 1.89243361585153 2005 1.80818181188266 2006 2.0270488038996 2007 1.74448834429211 2008 1.4485073896372 2009 1.59887644506674 2010 2.04440052656105 2011 1.53797979801846 2012 1.54039568922254 2013 1.5709386251408 2014 1.56472197033396 2015 1.65822649401944 2016 1.8830878290918 2017 1.69574379893675 2018 1.49158694827015 2019 1.35860186626761 2020 1.70848828321223 2021 1.31212300286654