Year % of GNI 2005 26.111923162246978 2006 26.673647511642155 2007 28.218276800956424 2008 28.463932021364773 2009 24.850295853855112 2010 25.610662868031596 2011 26.00684479445589 2012 25.74911745983676 2013 25.41560631105482 2014 25.95192320700446 2015 25.908411759847414 2016 27.120962201425286 2017 26.591976113539033 2018 27.034503201936978 2019 27.914657268409535 2020 28.91562682247295 2021 28.864880359667836 2022 27.5833927435409 2023 27.137311065435167