user: Question: What is the average year of Maja Pohar's Women's singles matches?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1974.0, 'Hermann Fröhlich', 'Monika Cassens', 'Gregor Berden Stane Koprivsek', 'Monika Cassens Christine Zierath', 'Joachim Schimpke Monika Cassens']
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Women's singles" = 'Maja Pohar';