This year my goal was to read 12 books that were bought in a previous year. I smashed that and read 15! Of the books I acquired there were 15 that I didn't read. Which means that my to read pile has not gone down. Or up. (It's not a literal pile since some of them are ebooks.)
So my goal for 2024 is once again to read 12 books that I acquired before 2024. And that my to read pile should not have gone up by the end of the year. Which given that I did that this year should be possible next year.