Iraq posted its second-best monthly export rate ever, but oil sales have not risen steeply enough to offset lower oil prices.Excluding oil sold by the Kurdistan Regional Government (KRG), which operates its oil sector independently of the federal government, Iraq exported an average of 3.285 million barrels per day (bpd) last month, according to the Oil Ministry’s initial calculation.At an average $22.21 per barrel, these exports earned Iraq $2.262 billion. In December, Iraq exported 3.2…