Year % of GNI 1986 3.5657436610256212 1987 3.276603311962602 1988 3.1436114448412384 1989 3.2950860592245306 1990 3.559273052455733 1991 3.5704997452797684 1992 3.7740449042864923 1993 3.196395943654018 1994 4.463267273073317 1995 6.304569800120547 1996 5.820995233135084 1997 5.101995738681738 1998 5.218640965128308 1999 3.395395284014993 2000 2.941560364395249 2001 2.938496170853794 2002 3.2868897196894653 2003 4.701599364745264 2004 3.64005151153466 2005 3.3057143713600174 2006 2.9291526049129066 2007 3.62822779737219 2008 3.641488474423073 2009 3.360717074390495 2010 2.7758560243664028 2011 2.5772530128032667 2012 2.7984122004160006 2013 2.7833576850884745 2014 2.9329591054552617 2015 3.0075851336399486 2016 3.023336245422487 2017 2.792311618771679 2018 1.8085421113341031 2019 1.697421374586566 2020 1.8455648811257672 2021 1.8244632510186327