Year % of GNI 1981 0.6411714158448193 1982 0.7135673224546683 1983 0.718345415274292 1984 0.5215355206375725 1985 0.5441673614749174 1986 0.5888380192896592 1987 0.7351355752259036 1988 0.8734826322262343 1989 1.1617543005514641 1990 1.2169802786952229 1991 1.8628449005369936 1992 1.8973964886645796 1993 1.8218182043160964 1994 1.686105412903799 1995 1.7367239091912055 1996 1.7949671707960455 1997 1.863125631516319 1998 2.069634105478068 1999 2.196619993025541 2000 3.3982972438875874 2001 2.988810075409206 2002 2.3562081628398026 2003 3.215938707357381 2004 2.3794113970760202 2005 3.0199105292577944 2006 2.8511897342832366 2007 3.7486505166208537 2008 4.294517140882454 2009 3.1803106544006523 2010 3.063107897470246 2011 2.8945009166087323 2012 2.8346451926819127 2013 2.2246233869655474 2014 2.243875584180862 2015 4.231043190639742 2016 2.7556416754105406 2017 2.5380626214681703 2018 2.5578630483494917 2019 2.620320420675155 2020 3.0610465607528057 2021 2.5734248622652225 2022 2.4005228545361113