Year % of GNI 2002 32.33472298506155 2003 28.85190747626849 2004 37.49814429062038 2005 46.227810706796355 2006 49.26493668532671 2007 46.96743027965557 2008 45.74649321127218 2009 30.630487432926078 2010 40.937955157156686 2011 41.48742272196751 2012 40.531725828175546 2013 34.47514200123835 2014 31.788665635241077 2015 26.146921605988553 2016 25.338935701672277 2017 24.612319057252932 2018 27.20122137982606 2019 35.29387479700713 2020 30.83571739569709 2021 41.7114507251218 2022 39.65778254463928 2023 33.190018787004114