Year % of GNI 1990 9.27962743319502 1991 5.85193480813919 1992 3.23780431143078 1993 5.76727559630157 1994 7.71524276358594 1995 6.65285376300737 1996 7.82103960370117 1997 8.30886314729787 1998 7.75191100355282 1999 6.77799791216345 2000 6.4575342338427 2001 6.10051403156053 2002 7.27393043278421 2003 7.12427767694854 2004 7.60098122324337 2005 6.53065525597193 2006 6.75580797331315 2007 5.90844791697625 2008 6.34745786704963 2009 9.56167705247112 2010 7.49312355221518 2011 8.78243338981162 2012 10.6333428293676 2013 9.79642028955904 2014 8.33150456104624 2015 7.30752934109861 2016 5.29575991046857 2017 6.46959107675457 2018 6.11417602464484 2019 6.31455805547504 2020 7.17795187193903 2021 6.43731113488443