None.
President Carter's popularity declined.
UFC.
cultural difference within Europe have declined
Iran
false!
Iran (the hostage crisis.)
iranD.It uses a rhetorical question
It has declined about 50,000
I do not know soccers!
I think that she still is famous and that she makes great money even though her popularity has declined.
He became less popular.
Terrance historically has never been an extremely popular name. It reached its peak popularity in the mid 20th century and has since declined slightly in popularity.