Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	3499930000
1995-01-01	4278120000
1996-01-01	4333150000
1997-01-01	4366430000
1998-01-01	4301320000
1999-01-01	3881210000
2000-01-01	4752690000
2001-01-01	6799810000
2002-01-01	5677290000
2003-01-01	11057000000
2004-01-01	11997900000
2005-01-01	17475190000
2006-01-01	29756790000
2007-01-01	47396610000
2008-01-01	61777850000
2009-01-01	33183750000
2010-01-01	37361050000
2011-01-01	42375510000