Spouse PR application: are tax/income documents from outside of Japan needed?

Hi!

I am looking into applying for PR through the HSP 1 year route this year and have all documents in check for myself it seems.

I am also going to apply for PR for my wife under the PR spouse route. However, this route requires income and tax records for 3 years and pension records for 2 years for both of us that we dont have since we have been living in Japan for only 1 year.

What should be done in this case? Only provide Japanese documents for 1 year we’ve been in Japan or supplement with additional years of documents from our previous country of residency?

Thank you all!