I don't see it. If you subtract each month's total from the previous month's total, you get the increase (or decrease, ha ha ha) for each month. Add them up and divide by 8 (the number of months tracked here) and you get an average increase of 2085.5.But, you know, for the an entire country of 250 million, that ain't too impressive.
Add up all 8 months' totals (Sep-Apr) and divide them by 8. That gives you 992,939 as the average number of publishers, not the average increase. You compare that with then average from last year of 992,809 and that's where you get the difference of 130 people.
Kwin