Raising a bucket of water

We have a well which has water but it's a long way down , say 100 meters. At the top of the well I have a see-saw with a bucket at each end , equally balanced.

When the buckets are both empty they balance. When the buckets are both full , they still balance. When one bucket is full it tips the see-saw down and the other end tilts up. When I empty the water it re-balances again. By filling up and emptying the bucket, it causes the see-saw to go up and down. The empty bucket is positioned to drop and scoop up a bucket of water (with every bucket/stroke).

That's probably fine when the water is at the same level but when it's 100 meters down we have to put a pump in the circuit - a sucker rod pump - here is a diagram. Sucker Rod Pump (from Internet Glossary of Pumps)

The sucker rod pump drinks a bit at a time, with valves that help maintain pressure etc. Until it sucks the water to the surface - let's say, one bucket at a time. This time I have had to expend let's say, 100 buckets (strokes) of water to raise 1 bucket of water. I call this priming the pump - before we can see any water appear we have to prime the pump to build up the pressure (like a lift pump http://www.animatedsoftware.com/pumpglos/liftpump.htm).

My query is: if the above is correct and it takes 100 buckets (or you could say 100 strokes) to lift 1 bucket of water - how many strokes does it take to life the next bucket of water ?

One stroke or 100.

I think it is one stroke but my friend thinks it's still 100.

Can anyone enlighten me.

Thanks
John