Calendar adjusted industrial production index increased 4,5% compared year over year, while seasonally and calendar adjusted industrial production increased by 0,8% last December compared with the previous month. Turkish Statistical Institute (TUIK) announced that industrial production index results indicate to an increase compared to December of previous year and 2015 in general. According to the report, seasonally and calendar adjusted industrial production increased by 0,8% last December compared with November. The report shows that calendar adjusted industrial production increased 4,5% in December 2015 compared with the same month of the previous year, while on the other hand, unadjusted industrial production index increased 3,2% over the same period. In the sub sectors of the industry, mining and quarrying index decreased by 2,1%, manufacturing index increased by 4,4% and electricity, gas, steam and air conditioning supply index increased by 7,7% in December 2015, compared with the same month year over year. According to the main industrial groupings (MIGs) classification, the largest increase was in durable consumer goods by 4,8% in December of 2015, compared with the previous month. THE LARGEST INCREASE IS IN COMPUTERS In the sub sectors of the manufacturing, the largest increase was in computers, electronic and optical products by 27,9%, this was followed by furniture by 9,3% and coke and refined petroleum products by 7,8% in December 2015, compared with the previous month. In the sub sectors of the manufacturing, the highest decrease was in manufacture of other transformation equipments by 28,7%, it was followed by leather and related products and machinery and equipment of repair and installation by 5,4% in December 2015, compared with the previous month.