In the decades ahead, immigrants will account for most of the population growth and they will drive up demand for housing.

Irish immigrants accounted for one-quarter of Australia's overseas-born population in 1871.

Irish Catholic immigrants poured into the city in the 1840's and soon accounted for half the population in some wards.

By 1910, immigrants from Mexico accounted for 11 percent of the country's population.

If immigration continues at current levels, immigrants and their descendants will account for 80 million of the increase.

Between 1894 and 1914, immigrants from southern, central, and eastern Europe accounted for 69% of the total.

The immigrants now account for 10 percent of the Israeli population.

Front leaders say their candidates do best in urban industrial areas where immigrants from North Africa often account for 20 to 30 percent of the population.

By 1850 Irish immigrants accounted for about one-fifth of the city's population.

In comparison, immigrants account for 36 percent of the population in Queens.