NEMA’s T5 lamp index increased for the third consecutive quarter, registering a reading of 164.5 during 4Q 2010. Shipments of T5 lamps showed robust growth for the calendar year by advancing nearly 31% over 2009. T8 lamp shipments posted an annual increase of 6.7% despite a 2.2% dip during the fourth quarter. The T12 lamp index continued on a path of decline during 2010 decreasing 7.1% for the year as a whole compared to 2009. Fourth quarter shipments of T12 lamps were 9.7% below their level from Q3 2010.
The market shares for T5 and T12 shipments increased 1% percent each at the expense of T8s, which declined by 2% percentage points during the fourth quarter. For calendar year 2010, T5 and T8 shares increased reaching 8.8% and 63.3% of shipments, respectively. Meanwhile, the share of T12 shipments decreased 3.4 percentage points to 27.9%.
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