Year % of GNI 1990 23.8712049316989 1991 24.8620917404662 1992 25.5917070484232 1993 23.2353628971048 1994 19.8588839118193 1995 18.1986592927174 1996 17.9933622006346 1997 17.9945967684751 1998 17.6621915656858 1999 16.4696510383331 2000 18.0114823933854 2001 19.6553258253239 2002 19.4191484474831 2003 18.53727045899 2004 16.4532019417554 2005 10.8400605622785 2006 13.0349337224872 2007 16.948734779872 2008 9.88396829058676 2009 3.88469447009673 2010 3.06892714145361 2011 0.87234213062147 2012 -0.525738135403124 2013 -0.773475661523487 2014 -0.907841983025252 2015 0.380078986133701 2016 1.2076796447703 2017 3.49058347105153 2018 2.88201993657692 2019 2.68963788990002 2020 -3.10405075339816 2021 0.16578319137743