Year % of GNI 1982 18.11388921433023 1983 20.239930048887267 1984 20.916075710503293 1985 21.428375062605056 1986 20.578122256623402 1987 22.777095111210848 1988 24.538876491208452 1989 23.839396344451508 1990 23.129225236697845 1991 24.02551159086655 1992 25.743364560433932 1993 26.919526881705185 1994 26.98370424720772 1995 25.55649410140147 1996 24.615067146978497 1997 24.803037263782947 1998 23.213737087654877 1999 21.033618018953472 2000 21.5802606056933 2001 21.248984722425888 2002 22.05321886540232 2003 24.216746210827658 2004 26.605977115973076 2005 27.344617135373262 2006 28.73690556577674 2007 30.038114427201442 2008 30.62037413823217 2009 28.571423489975466 2010 28.98509092363185 2011 26.593578613371164 2012 24.97563411462014 2013 23.09281708899126 2014 22.652612716762018 2015 20.51052143532165 2016 19.730215361845914 2017 20.345049258313832 2018 19.09906806536593 2019 17.702430572012112 2020 16.601253871204545 2021 17.944516709657464