The data presents the number of registered members of Goodreads.com participating in website's annual reading challenge from 2011 to August 2018. In 2017, over 3 million participants had signed up to track their reading progress on the social book review site throughout the year. In August 2018, the number of reading challenge participants was 3.2 million.
2011 | 0.15 |
2012 | 0.3 |
2013 | 0.43 |
2014 | 0.67 |
2015 | 1.72 |
2016 | 3.04 |
2017 | 3.16 |
2018 | 3.2 |