Year Dollars 1992-01-01 22158962 2002-01-01 3551760 2003-01-01 4930557 2004-01-01 13216577 2005-01-01 32917976 2009-01-01 14869064 2010-01-01 2663757 2011-01-01 2438921 2012-01-01 4937967 2013-01-01 20614212 2014-01-01 18341350 2015-01-01 32692242 2016-01-01 20345255