Number of factories
731
676
620
565
509
454
399
343
288
232
177
30
31
1
2
3
4
5
6
7
8
The X-axis in the diagram shows:
Days
The Y-axis in the diagram shows:
Number of factories
X:
30
31
1
2
3
Y:
177
221
266
307
359
X:
4
5
6
7
8
Y:
413
494
563
645
731
