Year % of GNI 1975 7.852408826302528 1976 14.891660842064008 1977 10.982820343790971 1978 12.39584183484322 1979 12.73769453911683 1980 14.512043250290512 1981 8.23652488539522 1982 2.189085474994229 1983 6.441577446226714 1984 7.8420391487581895 1985 10.474846527828996 1986 13.521414323336906 1987 19.388467494952085 1988 24.701185128750136 1989 25.57651289112574 1990 24.993022481495913 1991 23.905276547823124 1992 22.76857947947405 1993 22.008757071651534 1994 22.528216592183785 1995 25.191512060152697 1996 26.152313793774283 1997 25.8643003803136 1998 23.93070847098564 1999 23.14047897075614 2000 23.31709947426147 2001 23.733255663199166 2002 24.046604245672963 2003 24.794341869626653 2004 26.3710602380553 2005 27.28485115859355 2006 30.957400550918923 2007 30.420125359935437 2008 26.211563202473798 2009 26.062025617409876 2010 27.402178269669008 2011 23.75483478662715 2012 24.828419658101915 2013 23.722573411650952 2014 22.68607331745878 2015 23.305929745726573 2016 21.691263554790314 2017 20.64466808710431 2018 20.441555161469 2019 20.44309014586487 2020 20.356000929565173 2021 17.622122742595902 2022 17.680566291518907 2023 20.375594193213672