Number of factories

2,127
2,101
2,076
2,050
2,024
1,999
1,973
1,947
1,921
1,896
1,870













































































































































































































































































13141516171819202122

The X-axis in the diagram shows:  Days
The Y-axis in the diagram shows:  Number of factories
 X:    13  14  15  16  17 
 Y:    1,870   1,923  1,943  1,975  2,031 
 X:    18  19  20  21   22 
 Y:    2,056  2,097  2,127  2,127  2,124