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Published 12:31 27 Apr 2017 BST
Updated 08:58 3 May 2017 BST

Click the image to open the full interactive version (via Go To Court).
‘Open’, in this case, refers to countries that either do not require a visa from a citizen of a given country, or offer visas on arrival.
That doesn’t mean that the other 24% of countries are ‘closed’ to Ireland by the way. Countries deemed ‘not open for travel’ refer to countries where a visa is required to enter the country and in Ireland’s case, that includes the likes of USA, Canada and Australia.
With access to 153 countries (78% of the world) each, Germany and Singapore have the most powerful passports in the world, while at the other end of the scale, things are a little more complicated for China (55 countries – 28%), India (44 countries – 22%) and Afghanistan (23 countries – 12%).
Time to get ticking those 149 countries off the list, these new Aer Lingus routes for this summer might provide some suggestions where to start.