Props for using actual numbers, something that was very lacking in this process.

My bad, it was much closer than I thought. I do recall that the majority prior to joining the EU was with commonwealth nations.

Regardless, it's not like materials to trade disappears... my guess would be the UK negotiates with the EU to basically keep trade the same. If not the UK will be increase exports elsewhere.

That's the point though - keeping trade rules the same implicitly means keeping things like free movement and acceptance of EU regulation.

It's far from clear that the UK will be able to sort this out easily.

Especially since the electorate thought they were voting against free movement.