How to add VAT per item to invoice? Using PIP

I am using PIP to print invoices. I am VAT registered so I am required to display the amount of VAT (tax) per item on the invoice.

I need a VAT column added to my invoice so that each row contains

SKU, Product Description, Price (ex VAT), VAT

All of that is already there apart from the VAT column. Basically I need the invoice to show the VAT of each individual row in the invoice!

http://wordpress.org/extend/plugins/woocommerce/