Year % of GNI 1981 8.4686221696646 1982 9.950259742033584 1983 10.169284409767664 1984 8.497652058758455 1985 8.593337670773016 1986 9.858151352879872 1987 13.1257278693241 1988 14.25243085108279 1989 14.339037993135847 1990 15.184628924486375 1991 14.942327323657073 1992 16.01577522062841 1993 16.396220202798727 1994 17.660890108420215 1995 18.764719975116485 1996 19.875814395701223 1997 21.059259022042365 1998 23.360333273044 1999 22.615347527993844 2000 25.56481229614863 2001 30.57495668952845 2002 33.952483602109865 2003 36.171932258218476 2004 36.35585808207666 2005 39.77129677371431 2006 30.951378334656322 2007 37.93165811181146 2008 61.34400767576521 2009 32.35276515484673 2010 40.53105813794488 2011 29.436668132102177 2012 27.728317361178178 2013 29.54472841603345 2014 32.70292385278894 2015 32.03606533599892 2016 31.042320627576032 2017 33.11461214050327 2018 31.514312363462533 2019 32.3288985161415 2020 46.674521006770355 2021 46.94146067841768 2022 40.5853931415886