The November value was revised upwards by 0.5 points to 117.9 since last month. A large part of this revision is explained by a change of seasonal factors of the past months triggered by the inclusion of the December value. However, the current flash forecast for December is based on a sample of only 33 ports handling little less than half of the traffic represented in the Index. Therefore, we expect a rather strong revision during its next calculation. Since RWI and ISL started publishing the index, it was revised by 0.6 per cent on average from the first flash forecast to its second publication.
The Index is based on data of 73 world container ports covering approximately 60% of worldwide container handling. The ports are continuously monitored by the ISL as part of their market analysis. Because large parts of international merchandise trade are transported by ship, the development of port handling is a good indicator for world trade. As many ports release information about their activities only two weeks after the end of the respective month, the RWI/ISL Container Throughput Index is a reliable early indicator for the development of international merchandise trade and hence for the activity of the global economy.
The RWI/ISL Container Throughput Index for January 2014 will be published on February 25th.