YEREVAN, OCTOBER 8, ARMENPRESS. In September of this year the prices for petrol and diesel remained unchanged. As Armenian National Statistical Service informed “Armenpress”, the prices for petrol and diesel reduced appropriately by 8.5% and by 7.6% in September 2015 as compared with September 2014, and reduced appropriately by 7.3% and 8.9% as compared with December 2014.