RWI/ISL-Container Throughput Index
RWI/ISL-Container Throughput Index hitting all-time-high at the end of 2016
Press Release from 21 February 2017
During January 2017, the Container Throughput Index of the RWI – Leibniz Institute for Economic Research and the Institute of Shipping Economics and Logistics (ISL) recorded another increase, reaching 124.2 points.
Whilst the flash estimate for December 2016 needed a downwards revision (to 123.9), updated figures for November handling volumes of some ports made a strong upwards revision of the index figure for November necessary.
All in all, the index has been nothing but increasing since Summer 2016, suggesting the two year long stagnation of world trade could finally be over.
The flash-estimate for January is based on data reported by 39 ports, accounting for close to ~ 70% of the total index volume.
The RWI/ISL-Container Throughput Index for February 2017 will be released on March 23rd.
Phone: +49 201 8149-262
Dr. Sönke Maatsch
Institut für Seeverkehrswirtschaft und Logistik
Tel.: (0421) 22096-32
The Container Throughput Index is a joint project of RWI with the Institute of Shipping Economics and Logistics (ISL). It aims at providing timely information on short term trends in international trade. The index is based on the consideration that containers have become the most important means of transporting processed products. Therefore, the global container throughput and international trade can be expected to be highly correlated.
As a part of their monthly reporting many ports publish data on container throughput expressed in twenty foot equivalent units (TEU). ISL collects these data systematically in its port database. Since January 2017, the index also contains handling statistics for the port of Guayaquil. The Ecuadorian port thus became the 82nd port to be included in the computation of the index. Combined the 82 ports covered in the index account for about 6 out of 10 containers handled worldwide.
Calculating the indicator starts about 20 days after the end of each month. At that time, about 25 ports have already published information about the container throughput in the latest months, which allows for a flash estimate of the indicator. Data still missing are forecasted using statistical time series models. Thereafter, the data are added up and the sum is adjusted for seasonal and calendar effects. Furthermore, the trend-cycle component of the seasonally adjusted figures is estimated to eliminate irregular influences. One month later, as a rule data on 65 ports are available. Then an update of the figures already published is made and a new flash estimate for the latest month is released.
Hitherto, the RWI/ISL-Container Throughput Index shows a close correlation with world trade. The index provides valuable input into business cycles analyses, since it is available 3 to 4 months in advance of data on world trade published by international organizations, and one month in advance of the first estimates of world trade volumes.
Articles in other journals
Döhrn, R. und S. Maatsch (2012), Der RWI/ISL-Containerumschlag-Index – Ein neuer Frühindikator für den Welthandel. Wirtschaftsdienst 92 (5) download
Döhrn, R. (2012), Containerumschlag-Index als Frühindikator für den Welthandel. Schiff & Hafen 2012 (8): 14–16.
Older publications of the index can be found in the press release archive.