Year	% of internal resources
1995	10
1996	9.950000000000001
1997	9.9
1998	9.85
1999	9.799999999999999
2000	9.749999999999998
2001	9.700000000000001
2002	9.417444399999999
2003	9.334222200000001
2004	9.251
2005	9.499999999999998
2006	9.299999999999999
2007	9.1
2008	8.9
2009	8.7
2010	8.5
2011	8.299999999999999
2012	8.1
2013	7.9
2014	7.9
2015	7.9
2016	7.9
2017	7.9
2018	7.9
2019	7.9
2020	7.9