Tennis clothing market

Golden Age of Tennis (www.goldenageoftennis.com) are a manufacturer and retailer of heritage tennis clothing. We are in the process of preparing a memorandum for fund raising, and want to include a high level market analysis of the scale of the market generally, and the size and trends in heritage clothing. In this context 'Heritage' is anything reproduced from a previous era

I would like the output to ideally be somewhere along the lines of the table attached. The information doesn’t need to be 100% accurate but should be supportable and it credible. We dont need an extensive accompanying report, but do need some straightforward analysis which details sources and assumptions being made, and from which we can reasonably substantiate the numbers we are using.

Preference definitely given to anyone who can evidence a similar project.