Which founding year corresponds with the highest enrollment?
CREATE TABLE table_73909 (
    "Institution" text,
    "Location (all in Ohio)" text,
    "Nickname" text,
    "Founded" real,
    "Type" text,
    "Enrollment" text,
    "Joined" real,
    "Left" real,
    "Current Conference" text
)
SELECT MAX("Founded") FROM table_73909
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: Which founding year corresponds with the highest enrollment? ### Input: CREATE TABLE table_73909 (
    "Institution" text,
    "Location (all in Ohio)" text,
    "Nickname" text,
    "Founded" real,
    "Type" text,
    "Enrollment" text,
    "Joined" real,
    "Left" real,
    "Current Conference" text
) ### Response: SELECT MAX("Founded") FROM table_73909