Number of factories
646
626
605
585
565
545
524
504
484
463
443
15
16
17
18
19
20
21
22
23
24
The X-axis in the diagram shows:
Days
The Y-axis in the diagram shows:
Number of factories
X:
15
16
17
18
19
Y:
443
469
496
524
557
X:
20
21
22
23
24
Y:
592
609
628
646
638
