Such a project had been discussed at least since the 1640s.

These changes had been discussed and hoped for since the early 90's.

Plans for a fourth line have been discussed since the 1970s.

The teams had been discussing a trade since spring training.

His candidacy had been discussed at least since March 1918.

The cast members discussed their lives both during and since the filming of the show.

Intel executives said the decision had been discussed since 1993.

The indeterminate form 0 has been discussed since at least 1834.

The idea of the crowding out effect, though not the term itself, has been discussed since at least the 18th century.

Did he ever discuss it in the 17 or 18 years since law school, he asked?