How to buy Data Curencies over 3 years ago in MT4?

Hi guys.

I need to to backtest indicator MT4, but all of Broker I have tried is limited data 3, 4 month ago.

So, how to get data over 2, 3 years ago or over?

Thank you guys.

The broker I am , XM, provides data from as far back as 1975 for some currencies

Thank you JoshRSA very much, I will try on XM.
God bless you.

By the way, do you have your own affiliate link?
I want to say thank you to you.

Not with XM. Your gratitude is already enough. God bless