Year % of internal resources 2000 0.03388264669163545 2001 0.036896379525593014 2002 0.03991011235955057 2003 0.04292384519350812 2004 0.04593757802746567 2005 0.04895131086142322 2006 0.04895131086142322 2007 0.04895131086142322 2008 0.04895131086142322 2009 0.04895131086142322 2010 0.04895131086142322 2011 0.04895131086142322 2012 0.04895131086142322 2013 0.04895131086142322 2014 0.04895131086142322 2015 0.04895131086142322 2016 0.04895131086142322 2017 0.04895131086142322 2018 0.04895131086142322 2019 0.04895131086142322 2020 0.04895131086142322