The population increased by 272,000 in the eighteen years between 1971 (403,000) and 1989 (675,000) and another 345,000 in the next eighteen years (to 1,020,000 in 2007).
— с 403 000 (1971) до 675 000 (1989); а за следующие восемнадцать лет — на 345 000 чел.