Deriving continuous Data from Connected XY scatter line

Hi,

I am trying to find a way to derive/interpolate the continuous line data that excel uses to connect the points on an XY scatter chart.

Essentially my scatter chart represents a weighted histogram with the X axis representing 0-100%, with each point (and by extension the line connecting them) representing the portion [of 100%] at a particular revenue level, on the Y axis (attached below).

I need to find a way to obtain this 'connected line' data in continuous format for, say, 1% intervals…this data is then to be further interrogated in excel. Does anyone know a way to obtain/interpolate this data?

Thanks in advance,

Blofeld