What year(s) was Duisburg runner-up?
CREATE TABLE table_name_81 (years_runner_up VARCHAR, team VARCHAR)
SELECT years_runner_up FROM table_name_81 WHERE team = "duisburg"
### Context: CREATE TABLE table_name_81 (years_runner_up VARCHAR, team VARCHAR) ### Question: What year(s) was Duisburg runner-up? ### Answer: SELECT years_runner_up FROM table_name_81 WHERE team = "duisburg"