Year % of GNI 1995 7.29264719301539 1996 2.11049980548317 1997 13.8529385750555 1998 6.59640943139356 1999 13.9059422753881 2000 20.3971474436171 2001 24.2787752103922 2002 23.4410030031155 2003 26.9644741622217 2004 29.2746371179366 2005 44.8157743992356 2006 51.2156226178645 2007 53.1292247124799 2008 55.6633105727178 2009 43.5849880346339 2010 47.5793632129492 2011 50.2299897712447 2012 46.926836496291 2013 44.9974327263947 2014 41.9491731157453 2015 29.0508193715189 2016 24.0451167922668 2017 30.1662217800014 2018 33.7690333241531 2019 29.7183187937011 2020 23.7190517326249 2021 33.5224505350681