Year % of GNI 1976 -0.8418899097472009 1977 10.084113700671455 1978 5.7232063732959 1979 7.089837298204905 1980 8.324260817614798 1981 20.792966855676706 1982 23.126806688019045 1983 22.444483591407103 1984 15.849189564387249 1985 21.16225473939279 1986 22.336864529849308 1987 22.107756108766285 1988 21.701679613501113 1989 21.862417831647196 1990 22.57032854567159 1991 22.088724504915653 1992 21.47273401873312 1993 20.347403627861663 1994 21.73751521582302 1995 21.49076952091588 1996 22.550656699123728 1997 23.724250215267215 1998 25.11499074272085 1999 25.86742433862139 2000 26.92372615538225 2001 27.58515464929585 2002 29.56911363442087 2003 28.99569589268913 2004 30.267870332429805 2005 30.9860978741965 2006 33.45412221335627 2007 34.127801063935166 2008 34.71023994659799 2009 36.11318167182395 2010 35.87571227818736 2011 35.2671102077445 2012 37.43172932653628 2013 36.786646647627414 2014 35.418744226283984 2015 34.49183453689119 2016 35.611853331545326 2017 34.10759166929392 2018 34.095564753720616 2019 34.92309915346897 2020 35.71073067923599 2021 34.248499404810225 2022 32.655753661634954 2023 33.564724406649866