BOULDER - Sales- and use-tax collections in the city of Boulder increased 1 percent in May, reflecting transactions in April, compared with the same period a year ago, according to a report released Monday by the city.

The city collected $7.2 million in May this year compared with $7.1 million for the same period a year ago.

Retail sales tax was up 1.9 percent, from $5.6 million in May 2012 to $5.7 million in May this year.

Year to date, Sales- and use-tax collections are up 4.9 percent. Retail sales tax is up 6.2 percent, construction use tax is down 12.1 percent, and motor vehicle use tax is up 8.5 percent.

For the year, retail sales tax makes up 79.4 percent of the collections, followed by business use tax, 9.4 percent; Construction sales and use tax, 8.4 percent; and Motor vehicle use tax, 2.8 percent.