Canadian crude oil exports by rail for the three months ending in March declined by more than 25 percent year-on-year, UPI cited federal data as showing. The National Energy Board updated data on total crude oil exports by rail, showing an average 119,755 barrels per day were shipped for the three months ending in March. That's down 24 percent from the three-month period ending in December and 27 percent less than the same period in 2014.