Amazon book market share in the U.S. 2013-2015, by format

The timeline shows Amazon's share in the book market in the United States from the second quarter 2013 to the third quarter 2015, by format. Amazon accounted for 18 percent of consumer spending on e-books in the United States in the third quarter of 2015.

时间轴展示了自2013年第二季度至2015年第三季度，亚马逊在美国图书市场中的市场份额分布情况，按格式划分。在2015年第三季度，亚马逊占据了美国电子书消费者支出的18%。