"Sure there are major differences between boys and girls, but that gap is shrinking big time," he said.

For its part, the government is confident that the gap between rich and poor will shrink.

The gap has been shrinking fairly steadily since the 1960's.

The gap itself shrank to $14.1 billion from $15.7 billion, or 10.3 percent.

But both polls, which have sampled voters over time, show that the gap between the two candidates has been shrinking.

The gap between the two cities has been shrinking for decades.

But that educational gap between China and America is shrinking rapidly.

The gap shrank in May, largely because oil prices declined.

The gap between those worst off and the rest would quickly shrink.

"At this point, I've seen nothing to suggest the gap will shrink."