user: Question: Name the number of year for score being  6–3, 6–2, 6–4
Columns: ['Outcome', 'Year', 'Championship', 'Surface', 'Opponent in the final', 'Score in the final']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 1978.0, 'London', 'Carpet', 'Tim Gullikson', '6–7, 6–4, 7–6, 6–2']
SQL:

assistant: SELECT COUNT("Year") FROM "Table" WHERE "Score in the final" = '6–3, 6–2, 6–4';