What is the earliest year where the mintage (proof) is 25,000?
CREATE TABLE table_17258 (
    "Year" real,
    "Theme" text,
    "Artist" text,
    "Mintage (Proof)" text,
    "Issue Price (Proof)" text,
    "Mintage (BU)[ clarification needed ]" text,
    "Issue Price (BU)[ clarification needed ]" text
)
SELECT MIN("Year") FROM table_17258 WHERE "Mintage (Proof)" = '25,000'
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: What is the earliest year where the mintage (proof) is 25,000? ### Input: CREATE TABLE table_17258 (
    "Year" real,
    "Theme" text,
    "Artist" text,
    "Mintage (Proof)" text,
    "Issue Price (Proof)" text,
    "Mintage (BU)[ clarification needed ]" text,
    "Issue Price (BU)[ clarification needed ]" text
) ### Response: SELECT MIN("Year") FROM table_17258 WHERE "Mintage (Proof)" = '25,000'