NEMA’s indexes for HID lamp shipments continued to hover near historical low levels during 2013Q2. The index for mercury vapor lamp shipments continued to track downward, declining by 8.2 percent on a year-over-year (y/y) basis. Likewise, shipments of metal halide lamps fell 6.4 percent y/y, landing at the second lowest level in the series history. Sodium vapor was the lone HID index segment to show improvement. Following four consecutive quarters of y/y declines, the index stabilized during 2013 Q2 by registering a gain of 0.4 percent. Sodium vapor lamps increased their share to 33.2 percent. Shares of mercury vapor and metal halide lamps decreased to 4.2 and 62.6 percent, respectively.