For an average household that streams movies from Netflix and other online streaming services and people who watch Youtube those people use on average of 50 GB to 100 GB of data per month.
I'm Unlimited but one month I decided to track my data usage for the household and with 2 streaming Rokus and me and other family members watching youtube and browsing the internet we used 150 GB of data in one month.
I was expecting to use more than that but that's all we used.
For people that do a lot of game downloads they can get up to 500 GB or more in a month on their internet.