Oilfield services company Baker Hughes Inc. says the number of rigs exploring for oil and natural gas in the U.S. tumbled by 74 this week to 1,676.

The Houston firm said Friday in its weekly report 1,366 rigs were exploring for oil and 310 for gas. A year ago 1,777 rigs were active.

Of the major oil- and gas-producing states, Texas’ count dove by 44, North Dakota dropped six, Oklahoma fell five, California and Wyoming each lost four and New Mexico declined by three. Arkansas, Kansas and West Virginia were down two each and Colorado, Louisiana and Utah were off one apiece.

Ohio gained one rig.

Alaska and Pennsylvania were unchanged.