• IShares Gold Trust average ebitda margin for 2012 was 746.85%, a 37.39% decline from 2011.
• IShares Gold Trust average ebitda margin for 2011 was 1192.83%, a 109.25% decline from 2010.
• IShares Gold Trust average ebitda margin for 2010 was 570.04%, a 14.49% increase from 2009.

Ebitda margin can be defined as earnings before interest, taxes, depreciation and amortization as a portion of total revenue.