Bear, you have to get to grips with the whole picture. Ill try to explain. (Its a long post but Ill try to lay it out so its easy to read)
This is the sort of information, the BBC will do everything to avoid telling you.
Lets start with personal wealth. A UK citizen has the 3rd highest personal wealth value in the EU. Whilst its commonly known, its not commonly promoted. Heres an article from Geneva, (as strangely our media doesnt promote this sort of 'news')
http://lenews.ch/2016/09/22/swiss-still-the-worlds-wealthiest-says-report/
and the data this article was collated from is here. (Page 121 onwards) and is used amongst others as a world wide reputable data collection exercises for investment purposes etc.
https://www.allianz.com/v1474281539000/media/economicc_research/publications/specials/en/AGWR2016e.pdf
Just to be absolutely clear, these are calculations on average personal wealth per citizen in each nation, not a national GDP per capita figure (though that is shown on one of the charts).
So the average UK citizen is worth 132K. Sticking with the EU, we are only beaten by the Swiss and the Danes.
To then compare other key EU nations;
German Citizen is worth 67k
French 75k
However, note an Italian is worth 68k , higher than the Germans despite the national crisis.
Then you start dropping off;
A Greek is worth 21k
A Czech 18k
Hungarian 13k
Slovaks and Poles 10k
Then dropping to
Romania 5k
With me so far?
You then look at the EU population in numbers.
There are 510 million people living in the EU. Of that 510 million, 65 million are UK citizens. Of the 2 EU nations that beat us in personal wealth, there are 8 million Swiss, and 5 million Danes.
Coming down the personal wealth rankings, Poland for example have a population of 38million.
Whilst we account for only 13% of the total population of the EU, we have the largest personal wealth of 8.5 trillion of any EU nation by a long chalk.
Ill break it down for you using the same example nations above, the gross personal wealth for each nation is as follows;
UK 8.5 trillion
Swiss 2 trillion
Danes 0.72 trillion
Germans 5.4 trillion
French 4.9 trillion
Italians 4 trillion
Greeks 0.2 trillion
Czechs 0.18 trillion
Hungarians 0.1 trillion
Poles 0.38 trillion
Romanians 0.1 trillion
These are the markets youre selling into. In terms of personal wealth, and then 'buying' ability, UK citizens can buy 4 times as much 'stuff' as the Swiss. UK citizens can 'buy' 60% more than the Germans.
We have the largest 'buying' capacity in the EU. By a significant margin. Whilst the world sits back and listens to Merkel and Germany strutting their stuff, remember the above figures and realise that by losing the UK, it is the equivalent of the EU losing France, Spain, Poland, Hungary, Greece, Romania, Czech Republic, Latvia, Croatia, Lithuania.
Think about that for a moment.