Year % of GNI 1990 0.286032939529165 1991 0.393364085173652 1992 0.360439120817174 1993 0.358403476309308 1994 0.526267832241952 1995 0.570452791575929 1996 0.437223115479541 1997 0.568809693937295 1998 0.651891662113658 1999 0.710428508893151 2000 0.675849447508615 2001 0.607144044465296 2002 0.429520107973256 2003 0.519809700203931 2004 0.728935299395797 2005 0.693501561088008 2006 0.643638145314251 2007 0.524913069919634 2008 0.449597543015666 2009 0.49285559163825 2010 0.545131888558982 2011 0.576052847909634 2012 0.759574750753862 2013 0.789266303569579 2014 0.832568004100859 2015 1.04687620790052 2016 1.00355050207761 2017 1.0175301306263 2018 0.986864927010177 2019 1.23424426112569 2020 1.32551025739127 2021 1.37299776069797