I am hoping to track the historical sum of Pipeline Deals from Forecasts for a particular day in the past.

I don't think this can easily be done but this would help me compare the expected pipeline over time and make business decisions whether we have enough sales coming. Its easy to see the current number in the forecast module but the history seems more challenging. 

From a visual standpoint, in a graph, the y axis would be Forecast Pipeline Deals sum and the x axis would be dates.

Any ideas?