Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	35816291557.1804
1991-01-01	31697421803.4289
1992-01-01	30082307363.5449
1993-01-01	32561828668.8670
1994-01-01	35547258218.0248
1995-01-01	42699972070.0919
1996-01-01	41882752636.6603
1997-01-01	46119578101.2148
1998-01-01	43192018829.4508
1999-01-01	46046762105.6411
2000-01-01	48472558118.6558
2001-01-01	43521465591.0101
2002-01-01	40232053289.4562
2003-01-01	44613581047.7080
2004-01-01	50712030282.2630
2005-01-01	63047350503.7653
2006-01-01	74414845942.4911
2007-01-01	89610685779.4429
2008-01-01	89563255715.9250
2009-01-01	66916168976.2423
2010-01-01	83857994483.4950
2011-01-01	93460381650.4486
2012-01-01	95164580397.1279
2013-01-01	95232132022.8128