The Premier League has the highest revenue of any football league in the world, with total club revenues of €2.48 billion in 2009–10. In 2013–14, due to improved television revenues and cost controls, the Premier League had net profits in excess of £78 million, exceeding all other football leagues. In 2010 the Premier League was awarded the Queen's Award for Enterprise in the International Trade category for its outstanding contribution to international trade and the value it brings to English football and the United Kingdom's broadcasting industry.
Try to answer this question if possible (otherwise reply "unanswerable"): What were some of the reasons for the increased revenues in 2013-14?
the Premier League had net profits in excess of £78 million, exceeding all other football leagues