Straight from the 2010 Tow Guide (similar to the 2009's - for those who were asking):

Tow Receiver Max Tongue Weight Rating W/O WDH = 500 Pounds
Tow Receiver Max Trailer Weight Rating W/O WDH = 5,000 Pounds

Tow Receiver Max Tongue Weight Rating W/ WDH = 1,130 Pounds
Tow Receiver Max Trailer Weight Rating W/ WDH = 11,300 Pounds