When I look at all the data available for me personally, I do not see evidence of shaving or tampering imho.
2019 is down for me from 2018 but I blame that on Google rankings more than anything else.
Google was very good to me early on, then moved me down the listings for a while. Then in 20018 they put me back on top, but going into fall 2018 they moved me back down and have not brought me back up yet.
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