The GC has had an increasing trend until 2007 (GC = 0.3), and the smallest value of GC was observed in 2013 (GC = 0.208).
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The sentences
These payments are about 60%–70% of total expenditures (TEs) in some countries.[ 4 ] OOPP was equal to 55% in 2004 in Iran and had a decreasing trend and was equal to 50% of total HEs in 2012.