11.   The agency does not track the number of male au pairs.

12.   The agency does not track how many people have registered using the system.

13.   The federal agencies track the movement of all fireworks coming in, going out and moving around the nation.

14.   The report represents the first time the agency has tracked and made projections about the effect of AIDS on the workplace.

15.   While the regulations fostered trade, they made it much harder for intelligence agencies to track how U.S. equipment was used overseas, administration officials said.

16.   Executive director Janette Fennell said the number of deaths is probably higher because no single agency tracks them.

17.   He said he had just learned that a social services agency had been tracking Soltys and his family, recognizing they were having difficulty before the shootings.

18.   No single agency tracks all worker complaints or costs.

19.   The agency does not track how many people might be covered.

20.   The compulsory centres have been more effective as police agencies can track down the addicts for follow-up checks after they discharged.