How many years was the chassis a lotus-ford 38/7?
CREATE TABLE table_22184 (
    "Year" real,
    "Car number" real,
    "Start" real,
    "Qual. speed" text,
    "Speed rank" real,
    "Finish" real,
    "Laps completed" real,
    "Laps led" real,
    "Race status" text,
    "Chassis" text
)
SELECT COUNT("Year") FROM table_22184 WHERE "Chassis" = 'Lotus-Ford 38/7'
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 chassis a lotus-ford 38/7? ### Input: CREATE TABLE table_22184 (
    "Year" real,
    "Car number" real,
    "Start" real,
    "Qual. speed" text,
    "Speed rank" real,
    "Finish" real,
    "Laps completed" real,
    "Laps led" real,
    "Race status" text,
    "Chassis" text
) ### Response: SELECT COUNT("Year") FROM table_22184 WHERE "Chassis" = 'Lotus-Ford 38/7'