How many different enrollment numbers are there for the school whose students are nicknamed Barons?
CREATE TABLE table_23183 (
    "Institution" text,
    "Location" text,
    "Nickname" text,
    "Founded" real,
    "Type" text,
    "Enrollment" real,
    "Joined" real
)
SELECT COUNT("Enrollment") FROM table_23183 WHERE "Nickname" = 'Barons'
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 different enrollment numbers are there for the school whose students are nicknamed Barons? ### Input: CREATE TABLE table_23183 (
    "Institution" text,
    "Location" text,
    "Nickname" text,
    "Founded" real,
    "Type" text,
    "Enrollment" real,
    "Joined" real
) ### Response: SELECT COUNT("Enrollment") FROM table_23183 WHERE "Nickname" = 'Barons'