Year Dollars 1992-01-01 388867 1997-01-01 3669704 2002-01-01 3068300 2003-01-01 14607839 2004-01-01 3263669 2005-01-01 5469950 2006-01-01 4142043 2007-01-01 10954132 2008-01-01 14659885 2009-01-01 11177585 2010-01-01 8781002 2011-01-01 12868502 2012-01-01 17520248 2013-01-01 14204435 2014-01-01 21528904 2015-01-01 29190378 2016-01-01 43500714