How to keep the the number of the row fixed.

HI all,

I notice that the last page will be shorter if the the number of the row left is smaller than the pageLength. For example, if I set the pageLength equal to 10, but I have 25 rows total, the third page will be shorter because it only have 5 rows on the table. Is it possible that I can set a fixed number for the rows on every page or only the last page so the table size can stay the same? The empty rows can be just leave blank on the table. Any suggestion is appreciated. Thank you very much guys.