What is the lowest 2013 population estimate of the province with a 23.7 percentage?
CREATE TABLE table_64746 (
    "Rank" text,
    "Province" text,
    "Population (2011)" real,
    "Percentage" real,
    "Population Estimate (2013)" real
)
SELECT MIN("Population Estimate (2013)") FROM table_64746 WHERE "Percentage" = '23.7'
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: What is the lowest 2013 population estimate of the province with a 23.7 percentage? ### Input: CREATE TABLE table_64746 (
    "Rank" text,
    "Province" text,
    "Population (2011)" real,
    "Percentage" real,
    "Population Estimate (2013)" real
) ### Response: SELECT MIN("Population Estimate (2013)") FROM table_64746 WHERE "Percentage" = '23.7'