Are you proficient in softare development? If so, what languages?
It is not my specialty but maybe you could use OCR software to convert it to text and then import it into Excel?
+1 to OCR. If you're developing your own software to do this, see if your preferred language has OCR libraries (most do nowadays).You might be able to use OCR software but it will not convert with 100% accuracy. Probably more like 90% or so. Results would need to be verified.