how many lapdances a girl does in a year?

I would guess that in columbus a stripper does at the very least one lap dance per hour. (or maybe 2 if you consider a 2fer1 as 2 dances)

oh if it is a friday or saturday then the very minimum is probably 2 lap dances per hour (or 3 if you count a 2fer1 as 2 dances). I'm just guessing though based off my experience in the columbus clubs.

Let's say she did 15 a night and worked 200 days a year. That's 3000 lap dances/year.

That all depends on their motivation. Some, as the DJ at one club I go to regularly says, "live on tips and tips alone". One of my favorites is on the other extreme, and seems like she's always in the lap dance room at her club. Probably hundreds, if not thousands.

Looking at the math, we can understand the hustle by determined dancers. Three dances per hour, eight hour shift per day, 200 working days per year @$20 per dance is almost $100,000 tax free. That's a lot of guys groping a dancer.