I know there was a port strike last year at this time so year-over-year analysis will likely be worthless in the periods January thru March this year. However, if one simply looks at the previous January and February since 2006 – imports indeed are at very high levels whilst exports are soft.
This data set is based on the Ports of LA and Long Beach which account for much (approximately 40%) of the container movement into and out of the United States – and these two ports report their data significantly earlier than other USA ports. Most of the manufactured goods move between countries in sea containers (except larger rolling items such as automobiles). This pulse point is an early indicator of the health of the economy.
Consider that imports final sales are added to GDP usually several months after import – while the import cost itself is subtracted from GDP in the month of import. Export final sales occur around the date of export. Container counts do not include bulk commodities such as oil or autos which are not shipped in containers. For this month:
As the data is very noisy – the best way to look at this data is the 3 month rolling averages. There is a direct linkage between imports and USA economic activity – and the change in growth in imports foretells real change in economic growth. Export growth is an indicator of competitiveness and global economic growth.
The continued underperforming of exports is not a positive sign for GDP as the year progresses.
Unadjusted 3 Month Rolling Average for Container Counts Year-over-Year Change (comparing the 3 month average one year ago to the current 3 month average) – Ports of Los Angeles and Long Beach Combined – Imports (red line) and Exports (blue line)
