In what year was the album “WITHOUT YOU - Single” released by NCT U?

In what year was the album “WITHOUT YOU - Single” released by NCT U?: The album “WITHOUT YOU - Single” was released in 2016 by NCT U.
What is the most successful song from the album “WITHOUT YOU - Single” by NCT U?: “Without You” is the biggest hit from the album “WITHOUT YOU - Single” by NCT U.

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