I am having a disagreement about agricultural importance comparitively in these time frames and was wondering if any of you have that type of data on hand/ know where to find it.
The article English gross domestic product, 1300-1700: some preliminary estimates [2008], may be of interest to you, though their sectoral numbers are in a long printed table at the end of the paper.
And Robert C. Allen Economic structure and agricultural productivity in Europe, 1300-1 800 (2000) has estimates more broadly across Europe, though some strong assumptions were required. And again, the numbers are not in a convenient format.