Year % of GNI 1995 6.63055626302382 1996 6.10020134339917 1997 6.15938769024709 1998 7.22389479613799 1999 6.07039643742801 2000 4.48311426605871 2001 2.90775644891531 2002 1.21950309357446 2003 1.80733861576089 2004 0.578454323147571 2005 3.10155279391633 2006 3.62601807235019 2007 5.63771593318471 2008 5.50668682114258 2009 4.6457050004701 2010 3.99039684090565 2011 6.26712232270399 2012 5.43071991312279 2013 5.32008491562106 2014 6.08410632451278 2015 7.8496392641754 2016 7.40092992071137 2017 7.39570010086478 2018 7.98153166357245 2019 8.74453327699405 2020 8.85126222259974 2021 8.77900718742573