• Gold Fields average gross margin for 2014 was 31.13%, a 52.91% decline from 2013.
• Gold Fields average gross margin for 2013 was 66.11%, a 22.27% decline from 2012.
• Gold Fields average gross margin for 2012 was 54.07%, a 17.44% increase from 2011.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.