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 '19 4.57 GiB / 25.17 GiB / 29.74 GiB Nov '19 1.33 GiB / 4.22 GiB / 5.55 GiB / 7.75 GiB yesterday 69.09 MiB / 121.08 MiB / 190.17 MiB today 13.24 MiB / 43.51 MiB / 56.75 MiB / 110 MiB