Year Dollars 1992-01-01 173965 1997-01-01 768488 2002-01-01 238016 2003-01-01 253678 2004-01-01 281682 2005-01-01 321297 2006-01-01 465369 2009-01-01 715906 2012-01-01 10577431 2013-01-01 14504042 2015-01-01 5590724 2016-01-01 1988088