what is the unemployment rate where the market income per capita is $16,406?
CREATE TABLE table_22815568_13 (
    unemployment_rate VARCHAR,
    market_income_per_capita VARCHAR
)
SELECT unemployment_rate FROM table_22815568_13 WHERE market_income_per_capita = "$16,406"
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 unemployment rate where the market income per capita is $16,406? ### Input: CREATE TABLE table_22815568_13 (
    unemployment_rate VARCHAR,
    market_income_per_capita VARCHAR
) ### Response: SELECT unemployment_rate FROM table_22815568_13 WHERE market_income_per_capita = "$16,406"