Question: Strictly Come Dancing returned for its twelfth series beginning from 7 September 2014 with a launch show, with the live shows starting on 26 and 27 September, Bruce Forsyth decided to leave the show after the eleventh series; however, Forsyth will continue to host the Christmas specials, titled Christmas Specials of "Strictly Come Dancing", and have been transmitted by BBC Television, each year since which year?
{'answer': '2004', 'supporting_facts': [['Strictly Come Dancing (series 12)', 1], ['Strictly Come Dancing Christmas Specials', 0]]}