Year	US Dollars, Sum Over Component Sub-periods
1997-01-01	729617292931.671
1998-01-01	761640390388.622
1999-01-01	798360606248.946
2000-01-01	895701712618.079
2001-01-01	860742863539.684
2002-01-01	881620382005.529
2003-01-01	1059316694753.290
2004-01-01	1289907747740.290
2005-01-01	1470850396147.270
2006-01-01	1743155516505.590
2007-01-01	2022003901481.880
2008-01-01	2354539274096.270
2009-01-01	1767073179202.800
2010-01-01	2050979526516.200
2011-01-01	2455953650057.940
2012-01-01	2321388573509.560