Farming in League of Legends

What is the maximum number of minions one can kill at the 5, 10 and 15 minute mark?

What are some good goals on number of minions killed to aim for based on level of harass?

Minions spawn every 30 seconds after the 90 second mark and alternating waves have a bonus siege minion. Including the 4:30 wave (assuming the minions got to mid-lane by 5 minutes), 45 minions will have spawned per lane. At 9:30 it will be 110, then 14:30 puts it to 175 (65 more per 5 minutes).

I'm not sure what constitutes "good" or bad, but minion kills are only a small part of being good in lane. I'd rather worry more about the enemy champions, trying to zone them out so they can't get kills or more importantly, experience.