Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	544000000
1995-01-01	738000000
1996-01-01	700000000
1997-01-01	766000000
1998-01-01	644000000
1999-01-01	582000000
2000-01-01	738000000
2001-01-01	1561000000
2002-01-01	2103000000
2003-01-01	2922000000
2004-01-01	4317000000
2005-01-01	5528000000
2006-01-01	7940000000
2007-01-01	11929000000
2008-01-01	13734000000
2009-01-01	11770000000
2010-01-01	13552000000
2011-01-01	19549000000