Oil prices have slipped on the world market on evidence that OPEC suppliers are pumping out output Benchmark crude ended nine cents lower in New York last night at USD27.13 a barrel, within a dollar of recent 11 week lows A survey had found that member states of the OPEC cartel had raised their output sharply in October It showed that individual members were ignoring quotas in an effort to build market shares// www.fxcentre.com