On which network did 'Taxi' originally air?

In what year did 'Three's Company' premiere? Where is 'Three's Company' set? On which network did 'The Love Boat' originally air? In what year did 'The Love Boat' premiere? In what year did 'Taxi' premiere? Where is 'Taxi' set? On which network did 'Mork & Mindy' originally air? In what year did 'Mork & Mindy' premiere?