What are some ROI for 100+9 NL

[Coachpoker]

What are some ROI numbers that strong online pros can expect playing 100+9 full table NL partypoker games? I've just started doing my own research on SNG's. I'm wondering how many games I'll need in my database before a true figure is reached.

Also, for people that have several thousand SNG's what are some typical numbers for "percentage in the money" as well as "AVG finish" as found on Pokertracker.

Any help would be appreciated.

Cheers,