What year was Luis Gutierrez election
CREATE TABLE table_18106 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" real,
    "Results" text,
    "Candidates" text
)
SELECT MIN("First elected") FROM table_18106 WHERE "Incumbent" = 'Luis Gutierrez'
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 year was Luis Gutierrez election ### Input: CREATE TABLE table_18106 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" real,
    "Results" text,
    "Candidates" text
) ### Response: SELECT MIN("First elected") FROM table_18106 WHERE "Incumbent" = 'Luis Gutierrez'