Year % of GNI 1990 20.782529446724475 1991 24.906465443351294 1992 22.980544722469457 1993 24.352317644950393 1994 23.357051338354793 1995 18.747725772323317 1996 16.134510790156472 1997 15.348483824117203 1998 11.323049957172032 1999 11.656664806946718 2000 16.106794733362886 2001 17.40745985450697 2002 19.011794003840887 2003 16.713303821218947 2004 16.502841415175183 2005 14.649664041818438 2006 17.5782719405991 2007 18.394139592341816 2008 22.301035233394668 2009 22.8145094796657 2010 22.073349181103925 2011 23.16071037243254 2012 22.201180905677337 2013 24.696254136092087 2014 24.82931542757514 2015 24.97584746101221 2016 22.43792834019122 2017 21.122851730018247 2018 19.084697432957544 2019 19.701266520119713 2020 19.907131612594547 2021 19.470725855445238 2022 18.439835800836885 2023 19.193379140530208