Year	% of internal resources
2005	1.8345588235294117
2006	2.072478991596639
2007	2.3103991596638656
2008	2.5483193277310927
2009	2.786239495798319
2010	3.024159663865546
2011	3.262079831932773
2012	3.4999999999999996
2013	3.7379201680672267
2014	3.9758403361344534
2015	4.1228991596638656
2016	4.023109243697479
2017	3.8445378151260505
2018	3.8445378151260505
2019	3.8602941176470584
2020	3.8602941176470584