Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	4289000000
1996-01-01	5087000000
1997-01-01	5877000000
1998-01-01	6621000000
1999-01-01	7869000000
2000-01-01	11925000000
2001-01-01	8276000000
2002-01-01	7026000000
2003-01-01	7566000000
2004-01-01	7067000000
2005-01-01	7019000000
2006-01-01	9214000000
2007-01-01	11056000000
2008-01-01	11434000000
2009-01-01	10878000000
2010-01-01	11439000000
2011-01-01	11377000000
2012-01-01	14044000000
2013-01-01	14456000000
2014-01-01	13959000000