Technology research points to turns

[proxyasian]

I have a question regarding the the technology table. It contains a variable called research points that relates to how long it takes to research a technology, but the values don't make much sense. A tech that takes 2 turns to research takes 200 points, but one that takes 18 turns requires 2200 points. There isn't even a common ratio of points to turns, it ranges from 100 to 125. Does anyone know how many points exactly equal one turn of research time?

[proxyasian]

It appears that it comes down to about 150 research points per turn. Less than 150 is one turn, 150 is two turns, 300 is three turns, etc. In case anyone else was interested.