"...Many gold investors suspect that the US has periodically attempted to flood the market with Fort Knox gold to keep prices low and the dollar high - perhaps through international swap agreements with other central banks - but facts remain scarce and the US Treasury denies that any such meddling has gone on for at least the past decade.
"...for at least the past decade."
I don't care who you are, that is funny right there.
It translates well, too-
"I haven't raped any eight year olds for at least the past decade".
"Murder? No, not for at least the past decade".
"Steal from the company during my 23 years as comptroller, Boss? No way, for at least the past decade".