In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

The DSM is now in its fifth edition, the DSM-5, published on May 18, 2013. The DSM evolved from systems for collecting census and psychiatric hospital statistics, and from a United States Army manual. Revisions since its first publication in 1952 have incrementally added to the total number of mental disorders, although also removing those no longer considered to be mental disorders.
how many versions of the dsm are there