Keep in mind that this is an 'average' and that exogenous events can greatly affect the normalized results.
Chart courtesy of friend Brian at ContraryInvestor. 
Gold Seasonality with Gold 2010 Daily Price Chart Overlay
"All the world marveled at this, and gave their allegiance to the Beast. And they worshiped the serpent, for giving such power to him, as they also worshiped the Beast. 'Who is as great as the Beast?' they exclaimed. 'And who is able to resist him?' And the Beast was allowed to commit great blasphemies against God."
Revelation 13:3-5
Keep in mind that this is an 'average' and that exogenous events can greatly affect the normalized results.
Chart courtesy of friend Brian at ContraryInvestor. 
Gold Seasonality with Gold 2010 Daily Price Chart Overlay