State coffers ended fiscal 2015 with a nice surplus and the trend continued last month, showing further signs of a growing economy.

Gov. Nathan Deal announced Monday that August collections were up 13.6 percent last month, an increase of $190 million over August 2014. During the first two months of the fiscal year, revenue has improved almost 10 percent.

The new state fiscal year began July 1.

State finances were bolstered by new revenue generated by House Bill 170, which raised taxes to pay for new and expanded roads and bridges.

But individual income tax collections also increased nearly 11.3 percent, and the sales tax take rose 5.2 percent in August. Corporate income tax and car purchase fee collections improved as well.