Turkey's calendar-adjusted industrial production rose 8.7 percent in December 2017, compared to the same month last year, the Turkish Statistical Institute (TurkStat) announced on Thursday.
Industrial output is considered a vital indicator for the economy as it is seen as a preliminary gauge for GDP growth.
Among three main sub-indexes, the mining and quarrying index rose the most --14 percent.
The annual increase in the manufacturing index was 8.9 percent, while the electricity, gas, steam and air conditioning supply index was up 5.7 percent.
The term "calendar-adjusted" is used to refer to data without calendar and holiday-originated effects.
The seasonal- and calendar-adjusted production level was also up compared with the same figure for December 2017.
"Industrial production increased by 0.9 percent compared with the previous month," TurkStat said
Among the sub-sectors, only the electricity, gas, steam and air conditioning supply sector contributed negatively to the monthly reading, slipping 1.1 percent, according to data.
On a monthly basis, the mining and quarrying index rose 2.6 percent while the manufacturing index climbed 1.2 percent in December.
Q4 2017 production up annually
TurkStat also said calendar-adjusted industrial production rose 7.8 percent in the fourth quarter of last year over the same period in 2016.
In a survey by Anadolu Agency's Finance Desk on Tuesday, a group of 11 economists projected the calendar-adjusted industrial production index would rise 6.4 percent year-on-year.
On an annual basis, industrial production in Turkey saw the biggest rise in July, up 14.5 percent.
In Turkish manufacturing activity, the Purchasing Managers' Index (PMI) for Turkey's manufacturing sector hit a seven-year high of 55.7 in January amid strong demand and accelerated output growth, according to a Feb. 1 report by London-based global data company IHS Markit co-prepared with the Istanbul Chamber of Industry.
In December, Turkey's exports rose to $13.87 billion, up 8.6 percent from the same month in the previous year, TurkStat said on Jan. 31.