Oil prices were up 3 percent in the first week of 2012, continuing a trend that began in 2011.
Here's how energy contracts traded Friday.
On the New York Mercantile Exchange:
Benchmark crude fell by 25 cents to finish at $101.56 per barrel.
Gasoline rose 1.51 cents to end at $2.7516 per gallon.
Heating oil rose by 3.14 cents to finish at$3.0702 per gallon.
Natural gas rose 8.2 cents to end at $3.062 per 1,000 cubic feet.
On the ICE Futures exchange in London:
Brent crude rose by 3.2 cents to finish at $113.06 per barrel.