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Ok, so let's assume you're correct. Since neither of us has a direct way to prove mining pools are running Segwit, we have to rely on observation. For you, a %5 increase in block size means Segwit is active. For me, a drop in average  number of transactions per second prove it isn't.
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Here's an example of an 100% Segwit transaction https://blockchain.info/tx/c23248b87ae5f1533e62d4e5f99ac4373a209a38050ac78b1c84b8b7b8d91b1f

And to show that there are Segwit transactions going on, a link to a busy wallet address:
https://btc.com/bc1qwqdg6squsna38e46795at95yu9atm8azzmyvckulcc7kytlcckxswvvzej