Keep track of your audible listen history
Audible only lets you see the past couple of months of your listening history on their website.
This will check your history every day and keep track of it for you.
https://www.audible.com/account/listen-history will now display an infinity symbol, which will bring you to your extended history since starting to use the extension.
You can bring up the same page by clicking on the extension icon in your browser.