The following graphs are for inbound and outbound traffic at the ports of Los Angeles and Long Beach in TEUs (TEUs: 20-foot equivalent units or 20-foot-long cargo container).
To remove the strong seasonal component for inbound traffic, the first graph shows the rolling 12 month average.
On a rolling 12 month basis, inbound traffic was down 0.5% compared in November to the rolling 12 months ending in October. Outbound traffic was down 1.0% compared to the rolling 12 months ending in October.
The 2nd graph is the monthly data (with a strong seasonal pattern for imports).
In general imports have been increasing, and exports have mostly moved sideways over the last 6 or 7 years.