Year	US Dollars, Sum Over Component Sub-periods
1988-01-01	128539000000
1989-01-01	143454000000
1990-01-01	171495300000
1991-01-01	171361200000
1992-01-01	178327800000
1993-01-01	140232700000
1994-01-01	157287200000
1995-01-01	170037500000
1996-01-01	187858000000
1997-01-01	192023500000
1998-01-01	205861400000
1999-01-01	212470600000
2000-01-01	230871700000
2001-01-01	229417800000
2002-01-01	238925000000
2003-01-01	286587800000
2004-01-01	341043500000
2005-01-01	371434000000
2006-01-01	430481000000
2007-01-01	496046900000
2008-01-01	543689500000
2009-01-01	404990000000
2010-01-01	475252100000
2011-01-01	547783100000
2012-01-01	480491000000
2013-01-01	470440900000