Google Backup not fully usable?

My backup is not usable.
Why can’t I tell what year my cloud data is for? I have multiple years of data and the graph options don’t include full date, only month and day, not year. How is that considered tracking data? I can’t use backed up data without dates, please change this feature. If past data can’t be updated, add the year of backup now for future data. Otherwise there’s no reason to use backup feature… Thank you