user: Question: What is the current account balance for a GDP at current prices of 142.640?
Columns: ['Year', 'GDP at constant prices (THB trillions)', 'GDP at constant prices growth rate (percent change)', 'GDP at current prices (USD billions)', 'Export volume of goods and services (percent change)', 'Current account balance (percent of GDP)']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1995.0, '2.941', '9.2', '168.019', '15.4', '-7.9']
SQL:

assistant: SELECT "Current account balance (percent of GDP)" FROM "Table" WHERE "GDP at current prices (USD billions)" = '142.640';