The data is like this:

- | A | B | C
- | ---------
1 | Y | - | -
2 | Y | - | -
3 | Y | - | -
4 | Y | - | -
5 | Y | - | -
6 | Y | Y | =Growth(A1:A5&B6)
7 | Y | Y | =Growth(A2:A6&B7)
8 | Y | Y | =Growth(A3:A7&B8)
9 | Y | Y | =Growth(A4:A8&B9)

This goes on for a couple of thousand rows.