Here's an interesting take on the role of ESA2010 reclassifications on Euro area growth: http://euobserver.com/news/126110. Strangely, this topic is rarely discussed in Ireland which switched to ESA2010 standards ahead of majority of other countries.
And here's an illustration of the claim by Minister Noonan (made in his Budget 2015 speech) that Irish farming is a EUR26 billion sector:
Somewhere else, someone is producing EUR20 billion worth of 'farming' activity that Minister Noonan knows of... Maybe he or they can point us in that direction. But the above figures include much more than 'farming':