With regard to the reply to question 3517 on 24 November 2017, (a) how many people were deported in (i) 2014, (ii) 2015, (iii) 2016 and (iv) 2017, (b) what nationalities were they, (c) what mode of transport was used to take them back to their countries and (d) what was the cost of sending each foreign national back to each country?