111i -- Volume index of industrial output (2015=100), 1995M01-2020M11
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Original index:
index point
Annual change of the original index series, %:
Cumulative annual change of the original index series, %:
Working day adjusted index series:
index point
Annual change of the working day adjusted index series, %:
Seasonally adjusted index series:
index point
Change of the seasonally adjusted index series from the previous month, %:
Trend series:
index point
Change of trend from previous month %:
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Creation date
Volume index of industrial output, Statistics Finland


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Description of statistic
Concepts and definitions
Changes in these statistics
The volume index of industrial output describes the relative change in the volume of industrial output at fixed prices when compared with a specific base period. Original index, index adjusted for working days, seasonally adjusted index and trend.
Standard Industrial Classification (TOL 2008)
Yrityksen tai toimipaikan yritysrekisterin mukainen toimiala
Annual change of the original index series, %
Alkuperäisen indeksipisteluvun muutos vuoden takaisesta prosentteina
Trend series
It has generally been though that time series on economic trends are made up of different elements, or components:
1. Trend cycle (trend in brief) describes the long-term development and the movements caused by economic cycles in a time series.
2. Seasonal variation (caused by e.g. changes of season) describes annually recurring, almost regular changes.
3. As its name implies, irregular random variation occurs totally randomly. It cannot be included in the aforementioned components.
Seasonal adjustment means the estimation of seasonal variation and the elimination of its impact from a time series. The obtained outcome from this is a seasonally adjusted time series. The trend of a time series is obtained if both seasonal variation and irregular random variation are eliminated from it.
Phenomena associated with long-term development and cyclical changes are more easily observable from a seasonally adjusted time series and a trend of a time series. For instance, the detection of turning points in economic cycles becomes easier. The figures of a seasonally adjusted series are comparable with each other, which makes the comparing of two successive observations meaningful. The same also applies to the values of the trend of a time series.
Sometimes the number of working days in an observation period influences the value a time series receives. The Tramo/Seats method makes it possible to calculate a time series adjusted for working days in which the observations are comparable with regard to the weekly structure. This refers to making allowances for the impact of weekends, public holidays (e.g. Independence Day, Epiphany, May Day, Easter) and the Leap Day.