Year	% of internal resources
1990	4872.499999999999
1991	4956.73077
1992	5194.1826925
1993	5447.211537499999
1994	5700.240385
1995	5953.26923
1996	6206.2980775
1997	6459.3269225
1998	6712.355770000001
1999	6965.384615000001
2000	7218.4134625
2001	6808.108975
2002	6397.8044875000005
2003	5967.5
2004	5832.0454549999995
2005	5696.590910000001
2006	5561.136362499999
2007	5425.6818175
2008	5290.227272499999
2009	5154.7727275
2010	5019.3181825
2011	4883.8636375
2012	4748.40909
2013	4612.954545
2014	4477.5
2015	3977.5
2016	3877.5
2017	3877.5
2018	3877.5
2019	3877.5
2020	3877.5