Click on graph for larger image in graph gallery.To remove the strong seasonal component for inbound traffic, this graph shows the rolling 12 month average.
On a rolling 12 month basis, inbound traffic is up 17% and outbound up 9%.
The 2nd graph is the monthly data (with strong seasonal pattern). For the month of March, loaded inbound traffic was up 2% compared to March 2010, and loaded outbound traffic was up 11% compared to March 2010. This was the third highest month for exports ever, and the highest since the peak in 2008.
This suggests the trade deficit with China (and other Asians countries) probably decreased in March.