Industrial and Agricultural Output (In Millions of Tons)
1913 1921 1928
Coal29.0 9.0 35.0
Grain80.0 37.6 73.3
Iron and steel8.5 0.3 7.3
The chart shows that output for [____] increased about 400\% between 1921 and 1928.
The chart shows that output for all three products [____] between 1913 and 1921.
| 1913 | 1921 | 1928 | |
Coal | 29.0 | 9.0 | 35.0 |
Grain | 80.0 | 37.6 | 73.3 |
Iron and steel | 8.5 | 0.3 | 7.3 |