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N.D. (AP) — North Dakota’s oil production increased about 5,400 barrels a day in May, after dropping by about 70,000 barrels the month before.

The Department of Mineral Resources says the state produced an average of 1.047 million barrels of oil daily in May. North Dakota’s production record was set in December 2014 at 1.22 million barrels daily.

North Dakota also produced a 1.64 billion cubic feet of natural gas per day in May, up from 1.61 billion cubic feet daily in April.

The May tally is the latest figure available because oil production numbers typically lag at least two months.

There were 29 drill rigs operating in North Dakota’s oil patch on Friday. The record was 218 rigs in May 2012.