CREATE TABLE table_30133_1 (current_account_balance__percent_of_gdp_ VARCHAR(255), gdp_at_constant_prices_growth_rate__percent_change_ VARCHAR(255))
How many current account balances are associated with GDP at constant prices growth rates of 4.6?
    
SQL: SELECT COUNT(current_account_balance__percent_of_gdp_) FROM table_30133_1 WHERE gdp_at_constant_prices_growth_rate__percent_change_ = "4.6"