State-owned gas producer Ukrgazvydobuvannia, the subsidiary of national energy company Naftogaz Ukrayiny, boosted natural gas production by 4.4% in 2017, to UAH 15.25 billion, and this year the company seeks to increase it to almost 16 billion cubic meters (bcm), Ukrainian Prime Minister Volodymyr Groysman has said Wednesday. "We must ensure the production of at least 20 bcm of Ukrainian gas by 2020," Groysman said.