How many research papers are downloaded by each major economic sectors?

I am interested in knowing who downloads academic papers. In particular, ideally, I wonder if it is possible to have a kind of matrix with: - in row, research areas (eg. computer science, epidemiology, economics, etc.) ; - in column, research paper consumers (Health private sector, Transportation private sector, Energy sector, Public administration and international institutions, etc.)

Thanks a lot for your thoughts and looking forward to discuss about it.