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it is not a good idea to report and compare fees in BTC or any value type like that. fees should always be reported in value/size like BTC/byte because for example nowadays there are a lot of multisignature transactions which also have multiple inputs. the transaction size is huge compared to a simple single signature transaction of early years with only 1 input. so even if both paid 1 satoshi/byte fee (ie equal fee) the fee for the multisig/multi input tx would be a lot higher.
I understand and agree with you, but i was just showing a graph for presenting such requested information from Wind_FURY on how it was being negotiated before.
As you might notice that's why these graph stats end in 2017