Year % of GNI 1990 8.45537094606314 1991 -165.915747382893 1992 17.8269244302239 1993 20.0881128251765 1994 19.4488614312778 1995 22.4820027204666 1996 25.1932016576813 1997 26.3304894640919 1998 13.0975623505008 1999 18.8897732336436 2000 30.7635766339676 2001 20.7492578621298 2002 12.4111424351188 2003 20.3797611633338 2004 31.3120420889082 2005 38.2627192189045 2006 45.4786442306094 2007 37.9750199579346 2008 39.0417800715555 2009 25.8229243684781 2010 32.223542060784 2011 36.6528530490036 2012 35.6368124776614 2013 33.3765305040047 2014 28.9661155744953 2015 12.392330191345 2016 7.52856561395228 2017 16.0024278893851 2018 18.8248652066433 2019 12.8253800570546