Year	Million Current Pounds
1919	22.9000
1920	33.4000
1921	36.6000
1922	28.5000
1923	25.0000
1924	24.4000
1925	24.0000
1926	20.7000
1927	22.6000
1928	22.5000
1929	22.5000
1930	21.1000
1931	19.4000
1932	18.3000
1933	18.1000