A 4-column table with 3 rows titled Industrial and Agricultural Output (In Millions of Tons). Column 1 has entries Coal, Grain, Iron and Steel. Column 2 is labeled 1913 with entries 29.0, 80.0, 8.5. Column 3 is labeled 1921 with entries 9.0, 37.6, 0.3. Column 4 is labeled 1928 with entries 35.0, 73.3, 7.3.
The New Economic Policy (NEP) was established in 1921. What was the effect of this policy change?