The national economy grew 6.28 percent compared to a year earlier in the second quarter, largely on the back of export growth, data from the central bureau of statistics showed this week.

The rate was faster than expected, partly due to an unexpected boost in investment, analysts said.

The economy grew 2.41 percent in the quarter compared to the first quarter, the bureau’s deputy chairman Slamet Sutomo told reporters, while exports rose 9.79 percent on a year earlier and 3.82 percent on the first quarter.