Year	US Dollars, Sum Over Component Sub-periods
1987-01-01	2434600000
1988-01-01	2812000000
1989-01-01	2651600000
1990-01-01	2762300000
1991-01-01	2866000000
1992-01-01	2929500000
1993-01-01	3190200000
1994-01-01	4116500000
1995-01-01	5102500000
1996-01-01	5346600000
1997-01-01	4864700000
1998-01-01	4244500000
1999-01-01	4978000000
2000-01-01	5086000000
2001-01-01	5190000000
2002-01-01	6405900000
2003-01-01	8066100000
2004-01-01	9620200000
2005-01-01	10141300000
2006-01-01	9713000000
2007-01-01	11585800000
2008-01-01	11440400000
2009-01-01	10088700000
2010-01-01	11384700000
2011-01-01	13022300000
2012-01-01	13138700000
2013-01-01	13223700000