21.   But as the tax money rolled into the federal counting house this spring and summer, that number dwindled.

22.   But scientists warn that the fishermen are getting a false impression of abundance because cod tend to congregate in reduced territory as their numbers dwindle.

23.   But the Japanese became disillusioned about delays and stolen cargo along the Trans-Siberian, so the number of containers dwindled.

24.   But the number venturing home dwindled to a few thousand a year as the civil war went on and the medieval rule of the Taliban started.

25.   But their numbers will dwindle, he said.

26.   But the numbers are dwindling.

27.   But their number is dwindling.

28.   But their numbers are dwindling.

29.   But their numbers have dwindled over the years to a fraction of what they used to be.

30.   But, he said, it might be possible for scientists to store the sperm stem cells of a number of males of a species whose numbers are dwindling.