Interactive Dashboards are supposed to show things you need to deal with now so only support recent records (this quarter and last quarter being the longest periods).
Modified On date will provide more records than Created on (assuming records have been updated in that period) but that is about as good as you can do with an interactive Dashboard.
The only other option would be to use a Standard Dashboard and create the dashboard by creating the appropriate charts using a view that returns all the records you care about.
---
If this post has answered your question please consider it for "Accept as Solution" or if it has been helpful give it a "Thumbs Up".
