21.   Currently, the Census Bureau issues annual poverty reports, calculating the number of families that fall below an income formula established decades ago.

22.   Kevin Pollard of the private research group Population Reference Bureau calculated the number of medals won by each country per million residents.

23.   Nobody has calculated the number of goal-mouths worldwide.

24.   Officials said they would be able to calculate the number of tigers in the Sunderbans -- the main habitat for the Royal Bengal tigers -- within two months.