Year % of GNI 1980 4.30032038365021 1981 3.887068104372356 1982 4.621810055280726 1983 4.474707866869304 1984 4.514031574729255 1985 4.4825870423385705 1986 4.662715996168673 1987 4.806259475582034 1989 4.6812230537105215 1990 4.191208731328647 1991 4.43984898996163 1992 3.873109845724769 1993 3.795299802501932 1994 3.584725162041534 1995 3.970928801111783 1996 4.40291141401345 1997 4.620017626656831 1998 4.861458495361281 1999 6.074133779078512 2000 5.871352827539936 2001 5.498741324999209 2002 5.412121590221879 2003 5.440905260661717 2004 4.482346328766736 2005 4.484836321693033 2006 4.307579126274255 2007 3.5007389442210615 2008 3.322846140257157 2009 3.3537891096346346 2010 2.8181891156913865 2011 2.5345248329056815 2012 2.6093772395198203 2013 2.7348382755328955 2014 3.0402205995379945 2015 3.4586216189550822 2016 3.846879452047913 2017 3.5403792216136534 2018 3.7155742509018292 2019 4.001691474239211 2020 4.076805510733664 2021 3.6266682168771984 2022 3.675822601427372