How many years was the opponent petr korda?
CREATE TABLE table_77241 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Opponent" text,
    "Score" text
)
SELECT COUNT("Year") FROM table_77241 WHERE "Opponent" = 'petr korda'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many years was the opponent petr korda? ### Input: CREATE TABLE table_77241 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Opponent" text,
    "Score" text
) ### Response: SELECT COUNT("Year") FROM table_77241 WHERE "Opponent" = 'petr korda'