The UK population increased more last year than at any time in almost half a century, according to figures from the Office for National Statistics.By mid-2010 the estimated resident population was 62,262,000, an increase of 470,000 (0.8%) on the previous year.The growth rate is the highest since 1962, during the "baby boom" years.'Natural change' - the difference between the numbers of births and deaths - accounted for 52% of the population growth.Mark Easton reports.