user: Question: How many year was the venue in stockholm, sweden used?
Columns: ['Year', 'Tournament', 'Venue', 'Result', 'Extra']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1958.0, 'European Championships', 'Stockholm , Sweden', '5th', '110 m hurdles']
SQL:

assistant: SELECT COUNT("Year") FROM "Table" WHERE "Venue" = 'stockholm, sweden';