7,129円
In 1801 the population of Great Britain was 10.6 million; by 1901 it was 37.1 million. The national product in 1801 has been valued at 〓138,000,000; by 1901 it was 〓1,948,000,000. The rise per head was from 〓12.9 to 〓52.5 and, as these figures represent constant prices, the rise in material s...