Context: CREATE TABLE table_30133_1 (current_account_balance__percent_of_gdp_ VARCHAR, gdp_at_constant_prices_growth_rate__percent_change_ VARCHAR)
Question: How many current account balances are associated with GDP at constant prices growth rates of 4.6?
Answer: SELECT COUNT(current_account_balance__percent_of_gdp_) FROM table_30133_1 WHERE gdp_at_constant_prices_growth_rate__percent_change_ = "4.6"