Import prices for glass and glassware edged down for the third straight month, seeing a 0.1 percent decrease from April to May, according to the latest release of the U.S. Bureau of Labor Statistics’ (BLS) Import and Export Price Indexes.

Import prices saw a 0.3 percent drop the month prior, following a 0.2 percent dip from February to March. Prices were still 1.3 percent higher in May 2014 than the same time last year, as the import index sat at 129.5.

Meanwhile, export prices rose for the fourth straight month, gaining 0.5 percent from April to May after seeing increases of 0.1, 0.1, 0.1 and 0.4 in January, February, March and April, respectively.

The latest spike in export prices helped get the May 2013 to May 2014 index increase up 1.3 percent. It now stands at 98.8.

The glass and glassware category includes float glass, safety glass, lab glass and a range of other glass products, according to information from the International Price Program office in Washington, D.C.

Overall across all sectors, the BLS reported that U.S. import prices gained 0.1 percent in May after a 0.5 percent dip the previous month.

Higher fuel prices were behind the overall rise, as combined imports excluding fuel were unchanged in May, according to the BLS. Import prices are up 0.4 percent from May 2013 and have seen just one month in the negative (April) since November.

Exports for all sectors saw a 0.1 percent price increase from April to May after a full 1 percent decrease in April. That dip was preceded by a 1.7 percent spike from January to March.