user: Question: Which Year is the lowest one that has a To par of –1?
Columns: ['Year', 'Dates', 'Champion', 'Country', 'Score', 'To par', 'Margin of victory']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'Jun 9–12', 'Catrin Nilsmark', 'Sweden', '69-70-72-68=279', '–9', '2 strokes']
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "To par" = '–1';