In November, flat glass prices saw their first increase since August. According to the latest Producer Price Index Report (PPI) issued by the U.S. Labor Department, flat glass prices rose 0.5 percent from October to November after seeing a 0.9-percent decrease over the prior two months.

Glass globe with dollar signs on background with money symbol.The PPI program measures the average change over time in the selling prices received by domestic producers for their output, according to the U.S. Bureau of Labor Statistics (BLS). The prices included in the PPI are from the first commercial transaction for many products and some services.

The latest increase continues the trend that flat glass prices have seen for most of the year, as they’ve decreased on a month-to-month basis just three times since January. The flat glass index sits at 121.0.

The latest bump in prices puts them up 1.7 percent since November of 2013.

In another report, import prices for glass and glassware increased 0.3 percent in November after a 0.1-percent bump in October. Import prices remained stagnant in September, saw a slight 0.1-percent increase in August and are up 0.1 percent from last November.

Meanwhile, export prices for glass and glassware didn’t change in November following a 0.2-percent decrease in October. Export prices were stagnant month-over-month in September and dropped just 0.1 percent in August. Export prices for glass and glassware are up 0.9 percent from this time last year.

Prices of materials for construction remained flat in November following an increase of 0.3 percent in October and a 0.2-percent jump in September. Prices in that category are up 3.2 percent from November 2013. Final demand for construction was stagnant after seeing a 0.5-percent spike in October. Those prices are up 2.2 percent from a year ago.

On the whole, the PPI for final demand fell 0.2 percent in November, seasonally adjusted, after a 0.2-percent dip in October and a slight 0.1-percent drop in September. On an unadjusted basis, the index for final demand increased 1.4 percent for the 12 months ended in November.

Overall prices for U.S. imports decreased 1.5 percent in November after a 1.3-percent drop in October and a 1.4-percent drop over the three months prior. Export prices declined 1.0 percent in November after seeing a 0.9-percent decrease the month before.