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Not sure if this is what you want. Wireless Network Metered Connection - Set in Windows 10 - Windows 10 Forums
Edit: You could try post # 2. Data Usage - How to Reset ? - Windows 10 Forums
Edit #2. I found this and think this is what you want. Network Data Usage - Reset in Windows 10 - Windows 10 Forums
That is just showing how much outbound and inbound traffic your Ethernet NIC is sending across the network. Does not show what you have sent out beyond the Gateway to your ISP Headend to be distributed.