First, the proportion of old people in the population is rising fast.

Between 1973 and 1985 the proportion of women working outside the home rose from 56 to 63 per cent.

A similar survey in 2001 found that the proportion had risen to 6 of 12.

The black proportion of the city's population rose from 38 to 51%.

The proportion of single mothers with jobs did not rise.

The proportion of Americans without health insurance has risen almost 25 percent since the late 1980's.

Among women with children, the proportion rises to 43 percent.

During the six months that ended in July 1999, the proportion rose to 53 percent, police officials said.

The proportion of children covered by health insurance rose to 86 percent in 1999, the highest since 1995.

But in the following two years this proportion rose to an average of more than 10 per cent.