How many people play GAA abroad?

There are over 2500 GAA clubs in Ireland. Within each club there can be many teams for different age categories and ability. Some players would be playing for more than one of those teams. Some clubs concentrate more or even exclusively on Hurling and others on Gaelic Football. Outside of clubs there are teams representing all levels of educational institutions from school to universities. Many workplaces have teams too. So because there is such a variety of teams, it is very difficult to know how many people play Gaelic Football. It is the biggest sport in Ireland.