Word Document Invoices converted into Excel Documents

We have 30 locations throughout the UK and we need the amount on each Microsoft Word sales invoice sorted into different office locations so we can see monthly or yearly revenue for each office location within Excel or some other equivalent type of document.

The invoices are the same except the logo for each office is in top right hand corner of invoice.
We are looking four years completed and there are about 1000 invoices per year.
We need someone that has done this type of work before and any examples of this type of reporting.
Ignore budget as we don't know how much this type of small project would cost.