Year % of GNI 1995 0.380650723453861 1996 -1.10024258018949 1997 2.53710164633746 1998 0.451165158734983 1999 6.8504974004157 2000 8.41537796977805 2001 10.3833507257995 2002 10.490575737424 2003 9.92926733824497 2004 7.94248256194486 2005 9.50561498948923 2006 13.887203754 2007 13.0166280118132 2008 10.5727077025085 2009 11.5930715256356 2010 10.7251856117759 2011 9.25575676465731 2012 11.9841639615103 2013 12.7853982473301 2014 13.0678538808044 2015 13.0604310474479 2016 12.1142299884712 2017 14.7576381244344 2018 16.9423568226578 2019 17.1950071829825 2020 16.6469981140806 2021 17.3422692547168