Popularity is position on a rank-ordered list of the number of copies of a works cataloged during a given period. If multiple works have the same number of copies during that period they share a popularity number.

Overall popularity: 40,395

Popularity year-by-year (top 100,000)

Popularity quarter-by-quarter (top 25,000)

Popularity month-by-month (top 10,000)

Cumulative popularity by month (top 100,000)