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: Jul '20 3.40 GiB / 7.06 GiB / 10.46 GiB Aug '20 8.82 GiB / 9.73 GiB / 18.55 GiB / 43.88 GiB yesterday 65.69 MiB / 219.46 MiB / 285.15 MiB today 4.70 MiB / 6.83 MiB / 11.53 MiB / 96 MiB