How long do I still need to wait for the GC.

EB 2, I-140 and I-485 concurrently filed: August 2003.

140 AP: January 2004.

First FP: September 2004 (code 1).

Second FP: March 2006 (code 3), my son (Code 2).

How long do I still need to wait for the GC?

Thanks.