NEMA’s linear fluorescent lamp shipments indexes continued their year-over-year decline in the fourth quarter of 2015. After declining for seven consecutive quarters, the index for T12 lamps posted a 4.2 quarter-over-quarter increase, but declined 17.4 percent from the fourth quarter of 2014. T8 and T5 shipments also continued to decline, decreasing by 13.4 and 9.3 percent, respectively, on a year-over-year basis.
T8 lamps accounted for a 72.4 percent share of fluorescent lamp shipments in the fourth quarter of 2015, with T12 lamps claiming a 16.8 percent share and T5 lamps a 10.7 percent share.