The new term appeared at the beginning of the 21st century.

The term first appeared in the late 1970s and early 1980s.

The term does not appear to have been applied earlier than the 19th century.

This term appears at a rather late date, in the 13th century.

The term does occasionally appear in popular media as well.

The term has appeared in several films and radio programs.

So far this year the term has appeared in print nearly 10,000 times.

And the terms of reference would appear to me to be obvious.

The term has not appeared in Polish media since 2005.

The term does not appear to be in common usage as of 2008.