Year	% of internal resources
1985	1.0679611650485437
1986	1.1147330097087378
1987	1.1615048543689321
1988	1.208276699029126
1989	1.2550485436893202
1990	1.3018203883495145
1991	1.34878640776699
1992	1.395752427184466
1993	1.4427184466019416
1994	1.4896844660194175
1995	1.4571775310679609
1996	1.424670596116505
1997	1.3921636611650483
1998	1.3596567271844657
1999	1.3271497922330096
2000	1.2946428572815531
2001	1.262135922330097
2002	1.262135922330097
2003	1.262135922330097
2004	1.262135922330097
2005	1.262135922330097
2006	1.262135922330097
2007	1.262135922330097
2008	1.262135922330097
2009	1.262135922330097
2010	1.262135922330097
2011	1.262135922330097
2012	1.262135922330097
2013	1.262135922330097
2014	1.262135922330097
2015	1.262135922330097
2016	1.262135922330097
2017	1.262135922330097
2018	1.262135922330097
2019	1.262135922330097
2020	1.262135922330097