VnStati Network Statistics
I made this page using vnStat and vnStati. It has been monitoring traffic since 7th March 2015
The graphs are updated by Cron once an hour.
I have made a how to here, if you would like to try this yourself.
Traffic statistics on a hourly basis for the last 24 hours
Traffic statistics on a daily basis for the last 30 days
Traffic statistics on a monthly basis for the last 12 months
All time top 10 traffic days
And this is the live output from vnstat:
rx / tx / total / estimated wlan0: Not enough data available yet. eth0: Oct '20 2.60 GiB / 6.26 GiB / 8.86 GiB Nov '20 3.50 GiB / 7.70 GiB / 11.19 GiB / 13.88 GiB yesterday 107.30 MiB / 1.29 GiB / 1.40 GiB today 8.27 MiB / 38.48 MiB / 46.75 MiB / 238 MiB