Year % of GNI 1995 6.67752345908424 1996 8.33529608456998 1997 8.20178694876526 1998 8.13123851405745 1999 6.66883433889636 2000 5.45133045517537 2001 4.3925816793357 2002 2.89849329055491 2003 3.55642415227784 2004 2.53617074019748 2005 5.49129309738836 2006 5.56223660586103 2007 7.75975007360098 2008 8.08823673392739 2009 7.10277254855383 2010 5.62734516518023 2011 7.41265621511063 2012 7.63798460100484 2013 7.64309228576616 2014 8.54247336715712 2015 9.9190131565739 2016 9.24351427336432 2017 9.1066013828758 2018 9.77313799064139 2019 10.8270710684519 2020 11.0646124928818 2021 10.8331194480979