How many Hercule Poirot mysteries did Agatha Christie write?

After checking several web sites, I have come up with the following numbers.

She has written 35 Hercule Poirot books, one with Charles Osborne called 'Black Coffee' is included in that number. She has 9 books that are compilations of short stories about Poirot, and she has 1 book that is a compilation of plays called 'The Mousetrap and Other Stories' about Poirot. There may be a little confusion in regards to 'The ABC Murders', because when it was made into a movie they called it 'The Alphabet Murders.' They are however, one and the same. That makes a grand total of 45 books about Hercule Poirot!

https://www.goodreads.com/list/show/102720.Poirot_s_mysteries_

Hercule Poirot -- This brilliant Belgian detective had a long and glorious career in thirty-three novels and sixty-five short stories. Hercule Poirot was created in 1916 as the detective star of Agatha Christie's first novel, The Mysterious Affair at Styles, published in 1920. Before his escape to England during WWI, Poirot, a retired Belgian police officer, was a celebrated private detective on the Continent.

By his final appearance in Curtain (1975), Poirot was confined to a wheelchair, although his little grey cells remained as sharp as ever. Upon his death, Hercule Poirot became the only fictional character ever to be honored with an obituary on the front page of The New York Times.

https://en.wikipedia.org/wiki/Hercule_Poirot_in_literature
agathachristie.com/stories?format=novel&character=hercule-poirot website no longer exists