Year	% of internal resources
2005	5
2006	5.2277778
2007	5.45555555
2008	5.68333335
2009	5.911111099999999
2010	6.1388889
2011	6.36666665
2012	6.594444449999999
2013	6.8222222
2014	7.049999999999999
2015	7.049999999999999
2016	7.049999999999999
2017	7.049999999999999
2018	7.049999999999999
2019	7.049999999999999
2020	7.049999999999999