Help needed - Steem / Blocktrades Transaction History

Hi fellow Steemians!

Could someone help me out?
I have carefully documented almost all of my crypto trades I have done in the last 5 years. I am just missing the ones about Steem.

I used Blocktrades when buying STEEM tokens and I cannot get a hold of the details of those trades anymore.

Does anyone know a way to retrieve the data? I did not open a blocktrades account at that time.
Or can I export my Steemwallet history somehow?

Many many thanks for your help!

Ruben