I took this Google chart, entered SLV GLD AG GPL and KLDX. It shows SLV + 16%, GLD + 11% AG + 42% GPL + 39% and KLDX up + 41%.
So maybe the bullions need to catch up a little. Use chart below, enter you favorites, compared to SLVĀ or GLD scroll sideways to Dec 23rd, and enter your favorites.
http://www.google.com/finance?q=gld&ei=tXywWLiiJpS3mQGAwrf4Dg