ISBNs assigned to self-published titles in the U.S. 2010-2018

The statistic provides information on the number of ISBNs (International Standard Book Numbers) assigned to self-published books in the United States from 2010 to 2018. In 2018, there were over 1.67 million ISBNs assigned to self-published titles in the country, up from just over 1.2 million in 2017.本统计数据提供了2010年至2018年间美国自出版图书所分配的国际标准书号（ISBN）数量信息。2018年，该国自出版图书所分配的ISBN数量超过167万，较2017年的120万有所上升。