Year	US Dollars, Sum Over Component Sub-periods
1997-01-01	4986511477.010470
1998-01-01	671048802.104523
1999-01-01	-8887034192.511570
2000-01-01	-8125643191.767150
2001-01-01	-2492331803.425540
2002-01-01	15999937170.143300
2003-01-01	25401105263.653400
2004-01-01	40696602921.839200
2005-01-01	49222929936.305700
2006-01-01	53292330864.817300
2007-01-01	65628400962.821900
2008-01-01	63462845864.249500
2009-01-01	62372159255.357300
2010-01-01	71924507477.512200
2011-01-01	93465121668.597900
2012-01-01	115380561684.625000