Year % of GNI 1982 27.717619388707625 1983 28.170774050187404 1984 30.07851832280979 1985 30.652805630142236 1986 30.96446939463479 1987 32.490763191174985 1994 29.87467284959366 1995 26.808811535920718 1996 26.537247716847205 1997 26.028819466727533 1998 25.79962863136116 1999 27.155314053781883 2000 28.1731339533448 2001 28.93224954504465 2002 29.836754358951403 2003 31.801127591677297 2004 33.93239732113064 2005 34.032367344552725 2006 35.484489053823054 2007 36.27867370031612 2008 36.89595242873646 2009 35.49070357457855 2010 37.11602378975383 2011 37.394899855762965 2012 37.26185996283943 2013 36.76500642129968 2014 37.00791665317001 2015 37.20954974704831 2016 36.449257882388814 2017 36.71111201303275 2018 37.34460522184481 2019 36.68639415291921 2020 37.70496120292623 2021 39.62984799841693 2022 39.69778085065958