evidence: The value of Northern Ireland goods exported to the Republic of Ireland was estimated at almost €4bn (£3.35bn) in 2021. [...] The managing director of a major manufacturing firm in the Republic said his business has increased its purchases from Northern Ireland suppliers by 33% since 2019. [...] The revised figures suggest Northern Ireland exports to the Republic were worth about €2.2bn (£1.8bn) in both 2019 and 2020 compared to the previous estimates of about €1.7bn (£1.4bn).