Four fifths of companies that export from Ireland trade into the UK market.
That's according to an analysis by the Central Statistics Office on trading routes into and out of Ireland.
The figures are based on 2016 trading statistics.
They show that a total of 8,600 enterprises exported goods in the calendar year.
Of the 6,800 companies that exported into the UK, around half - or 3,400 - trade exclusively into Britain.
These companies represent around 16% of the total value of goods exports to the UK, indicating that they are mainly small and medium sized companies, many of which may be in the early stages of their exporting endeavours.
These companies will have experienced first hand the massive drop in the value of sterling following the Brexit vote and the subsequent volatility in the euro-sterling exchange rate.
Exporters are most exposed to swings in currencies. The pound dropped from around 76 pence to the euro to 86 pence almost overnight following the Brexit vote.
It's currently trading at just below 89 pence to the euro.
Weaker sterling makes their products less attractive to UK buyers.
However, statistics and surveys consistently suggest that trade with the UK remains strong and that Brexit hasn't impacted on trade.
