Why specifically 3 years? Any other time frame will not support your argument? There is no trend on either direction currently, has not been for 1.5 years.
Brexit happened at the end of January of 2020, so 3 years is really the only viable amount of time to consider {since this year isn’t over to be considered).
There has been no change for 1.5 years now, what trend? The 1.5 years where it changed a little(!) prior?
the trend between 3 years ago and now. also, don’t forget to combine that knowledge with my point 2.
Why specifically 3 years? Any other time frame will not support your argument? There is no trend on either direction currently, has not been for 1.5 years.
Brexit happened at the end of January of 2020, so 3 years is really the only viable amount of time to consider {since this year isn’t over to be considered).
The fact that in 1.5 years there was no change IS a trend.
And notice the overall change after merely 3 years.