Year	% of internal resources
1962	37.5
1963	39.375
1964	41.25
1965	43.125
1966	44.99999999999999
1967	46.875
1968	48.75
1969	50.625
1970	52.5
1971	54.37499999999999
1972	56.25
1973	58.12499999999999
1974	60
1975	61.875
1976	63.74999999999999
1977	65.625
1978	67.5
1979	69.375
1980	71.25
1981	73.125
1982	75
1983	76.875
1984	78.75
1985	80.625
1986	82.5
1987	84.375
1988	86.25
1989	88.12499999999999
1990	89.99999999999999
1991	91.875
1992	93.75
1993	95.625
1994	97.5
1995	99.375
1996	101.25
1997	101.25
1998	101.25
1999	101.25
2000	101.25
2001	101.25
2002	101.25
2003	101.25
2004	101.25
2005	87.50000000000001
2006	87.50000000000001
2007	87.50000000000001
2008	87.50000000000001
2009	87.50000000000001
2010	87.50000000000001
2011	87.50000000000001
2012	87.50000000000001
2013	87.50000000000001
2014	87.50000000000001
2015	87.50000000000001
2016	87.50000000000001
2017	87.50000000000001
2018	87.50000000000001
2019	87.50000000000001
2020	87.50000000000001