Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_30133_1 (gdp_at_constant_prices__thb_trillions_ VARCHAR, current_account_balance__percent_of_gdp_ VARCHAR)
### Question:
What is the GDP at constant prices for a current account balance of 12.8?
### Answer:
SELECT gdp_at_constant_prices__thb_trillions_ FROM table_30133_1 WHERE current_account_balance__percent_of_gdp_ = "12.8"