Ratio of net proceeds to gross proceeds, 2007-2016

Net : gross

2007 - 49%

2008 - 48%

2009 - 43%

2010 - 46%

2011 - 51%

2012 - 64%

2013 - 56%

2014 - 58%

2015 - 81%

2016 - 71%