Ui-table dsiplay control

I have a table which is updated about once a second. It's sized so that if it gets bigger, it still fits in the same display area, but scroll bars appear and it can be scrolled.
But each time it's updated. the view resets to the top of the table.
How can a prevent it from resetting the display to the top of the table, so I can see what's in the rest of the table?