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: Jun '20 2.03 GiB / 29.11 GiB / 31.15 GiB Jul '20 156.17 MiB / 567.73 MiB / 723.89 MiB / 5.60 GiB yesterday 32.72 MiB / 89.90 MiB / 122.63 MiB today 60.65 MiB / 246.74 MiB / 307.39 MiB / 336 MiB