1,065 titles made a weekly list. The odds of a book making the list are low -- anywhere from around 1 in 350 traditionally published print books (or 1 in 700 or more when you add in self-published titles).
In 2014 1,030 titles hit the list and in 2013 – the first year the lists expanded from Top 15 to Top 25 in hardcover fiction, hardcover non-fiction, mass market and trade paperback, 997 titles made the lists. This means that fewer titles stay on the list a long time, but plenty of books do stick around.
Good luck in fulfilling your aspirations to crack the list.