Number of factories
1,137
1,081
1,025
969
913
858
802
746
690
634
578
17
18
19
20
21
22
23
24
25
26
The X-axis in the diagram shows:
Days
The Y-axis in the diagram shows:
Number of factories
X:
17
18
19
20
21
Y:
578
647
704
762
822
X:
22
23
24
25
26
Y:
888
973
1,030
1,092
1,137
