Draw path based on table of co-ordinates.

[AmazingGimp]

Hi there, back again with more challenging graphic, at least for me.

I have a 10,000 points of co-ordinate x-y. 
Is there anyway, i can import my points in, and the path start drawing the lines and then interpolate using some polynomial / bezier curve ?
Here is a sample graph, when i plot it in excel.