Notes to self
Google tax deductions of corporations historical data
Click SOI Tax Stats - Corporation Tax Statistics - IRS.gov
Click Integrated Business Data
Click the link for Table 1 because it shows the most years. Clicking this link lets you open or save the XLS file.
Note, at irs.gov the color of the link text is the same whether you've visited the link or not. Just makes it a little extra difficult to see how you got to where you got to.
The file I got is called 12otidb1.xls. One worksheet for the years 1980-2012, annual data. Just now I'm interested in the total receipts of corporations.
Note that some of the cells contain formulas. If you copy part of the sheet to work on, make sure you copy all of the necessary cells.