Show the working years of managers in descending order of their level.
SELECT Working_year_starts FROM manager ORDER BY LEVEL DESC
SELECT Working_year_starts FROM manager ORDER BY LEVEL DESC
[{'Working_year_starts': '1993'}, {'Working_year_starts': '1999'}, {'Working_year_starts': '1985'}, {'Working_year_starts': '2001'}, {'Working_year_starts': '2003'}, {'Working_year_starts': '2004'}, {'Working_year_starts': '2006'}]