In 2008 the domestic migrationrate was just under 12%, and the rateofmigration between states fell to 1.6%-less than half the level that prevailed in the post-war decades.
2008年的人口流动率只有不到12%，州间流动率跌倒1.6%，不到战后数十年水平的一半。
2
As recently as five years ago, US migration was twice the rateof European Union states.
就在5年前，美国的移民率还是欧盟国家的两倍。
3
During periods when commodity prices were high, the rateof westward migration increased spectacularly.