I want to know the answer to the following question:
What was the percentage increase of Manhattan hotel rooms between 2013 and 2014?
All the background I'm provided with is that "In October 2014, the Anbang Insurance Group, based in China, purchased the Waldorf Astoria New York for US$1.95 billion, making it the world's most expensive hotel ever sold.". Is that enough to answer the question?