Revision of international trade in goods statistics in 2021

Final figures of the statistical year are published at the end of August the following year. Finnish Customs thus follows the Eurostat recommendation on the time of publication of final statistics. The final international trade in goods statistics for 2021 were published on 31 August 2022.

In 2021, the preliminary statistics on export and import values published monthly by Finnish Customs showed approximately the same amount of deviation from the final figures of the statistical year as in earlier years. The preliminary export values were closer to the final values when compared to the import values. Many corrections were made especially with regard to imports from the EU area.

The final export figures for last year show a figure that is 1 141 million euros higher than what was estimated in the preliminary statistics. This is 1.7 per cent of the value of the total exports. The final import figures increased by 1 294 million euros, that is, by 1.8 per cent of the value of the total imports.

The monthly preliminary figures on export and import and the final international trade figures for 2021 are shown in the table 1 below and the revision percentage for 2010-2021 in the figure 1 below.

Figure 1. Yearly revision of the international trade statistics from the preliminary data to the final figures 2010-2021, per cent of the value of exports and imports

Finnish Customs always publishes the preliminary international trade data at the latest 38 days after the end of the statistical month. Detailed monthly statistics on international trade are published at the latest 60 days after the statistical month. The final figures of the statistical year are always published at the end of August the next year.

The statistics for each month are subjected to an inspection process, in which changes can also be made to statistics published in earlier months. Typically, most corrections are made in the two months following the statistical month. When the monthly statistics are published, updated data on previous months of the statistical year are also published.

The supplements to the statistics are essentially affected by delays and incompleteness in the accrual of statistical material. Typical errors in the statistical declarations include incorrect commodity codes or country codes, as well as faulty value and quantity data. The internal trade statistics are also checked by comparing them to the data on value added tax. Consequently, the statistics are updated by adding missing data and deleting and correcting incorrect data. The figure 2 below shows the monthly deviations of the international trade statistics from the preliminary data to data published in the monthly statistics of the same statistical month.

Figure 2. Monthly deviations of the international trade statistics from the preliminary data to the monthly survey data for 2020-2021, per cent of the value of exports and imports

The figure 3 below shows the yearly corrections of the international trade statistics from the preliminary data to the data published in the monthly statistics of the same statistical month. Because the corrections have either an increasing or decreasing effect on the value of export or import, the percentage of the deviation from the corresponding preliminary data has been calculated as an absolute value.

Figure 3. Yearly corrections of the international trade statistics from the preliminary data to the monthly survey data for 2010-2021 calculated as an absolute value of the deviation, per cent of the value of exports and imports

Detailed information on the grounds for drawing up international trade statistics can be obtained under the heading International Trade in Goods Statistics on the Finnish Customs website. The website also contains a publishing timetable for the preliminary data and the monthly surveys.