Number of factories
570
534
499
463
427
392
356
320
284
249
213
23
24
25
26
27
29
30
1
2
3
The X-axis in the diagram shows:
Days
The Y-axis in the diagram shows:
Number of factories
X:
23
24
25
26
27
Y:
213
233
270
310
343
X:
29
30
1
2
3
Y:
414
454
490
536
570
