The amount of increase can vary depending on:
1. How many loops you net 1 knot into in round/row 1. (In the sample there are 3)
2. How many knots you tie in loop with multiple knots in it in round/row 1. (In the sample there are 6)
3. How many loops you net together in round/row 2. (In the sample there are 4)
The number of loops needed in round/row 1 varies depending on the answers to questions 1 and 3.