Is it actually 41%? Is it a massive hit? What is the economic impact of small trade frictions on a declining proportion of exports. The main reason for the decline is not Brexit, it is that the EU is a declining proportion of the world economy because Europe is the slowest growing region of the world.
> This is the whole Brexit story.
No, it really is not. Similar economies in the EU are doing about as badly as the UK so you cannot blame Brexit
> So at best economic growth barely exceeds population growth but overall it's flat to down.
One of the replies to my comment links to a graph at constant currency and is shows low growth so you might stretch to flat/stagnant, but definitely not down.