Quarter	Millions Of Pounds Of Coal
1931-01-01	3639.00
1931-04-01	3174.00
1931-07-01	3044.00
1931-10-01	3274.00
1932-01-01	3306.00
1932-04-01	2991.00
1932-07-01	2734.00
1932-10-01	3096.00
1933-01-01	3235.00
1933-04-01	2778.00
1933-07-01	2787.00
1933-10-01	3260.00
1934-01-01	3483.00
1934-04-01	3022.00
1934-07-01	2914.00
1934-10-01	3227.00
1935-01-01	3370.00
1935-04-01	3015.00
1935-07-01	2884.00
1935-10-01	3379.00