capita $8,643 [4]  ( 89th ) GDP (nominal) 2010 estimate  -  Total $318,850 billion [4]  ( 30th )  -  Per capita $4,992 [4]  ( 88th ) Gini  (2002) 42  HDI  (2010) 0.654 [5]  (medium) ( 92nd ) Currency Baht (฿) ( THB ) Time zone ( UTC +7) Drives on the left ISO 3166 code