I still leave the form blank like a do every year regardless of what I purchased online.
Careful, I recently was audited for Use Tax. The auditor went through all my credit card bill and circled each item that looked like no tax was added ($89.99, $69.95, etc) and demanded that I show a receipt for each one.
.. going back three years. Ouch.
Why would you supply your Credit Card Bills? Who doesn’t shred them?
Personal opinion: throw the state a bone if you are running a business. Look for a few credit card charges for online stuff; calculate the tax & mail it in. Doesn’t have to be for a whole lot. They won’t bother coming after you if you appear to have “complied.”