Task: Question Generation
Input (English): Passage: Tourism is vital to Manhattans economy, and the landmarks of Manhattan are the focus of New York Citys tourists, enumerating an eighth consecutive annual record of approximately 62.8 million visitors in 2017. According to The Broadway League, shows on Broadway theatre sold approximately US$1.27 billion worth of tickets in the 2013–2014 season, an increase of 11.4% from US$1.139 billion in the 2012–2013 season; attendance in 2013–2014 stood at 12.21 million, representing a 5.5% increase from the 2012–2013 seasons 11.57 million. As of June 2016, Manhattan had nearly 91,500 hotel rooms, a 26% increase from 2010.
Output (English): How many more billion dollars worth of tickets to Broadway theatre shows were sold in 2013-2014 than in 2012-2013?