Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	877300000
1981-01-01	1077600000
1982-01-01	1071700000
1983-01-01	1204100000
1984-01-01	1384400000
1985-01-01	2013500000
1986-01-01	1590000000
1987-01-01	1937200000
1988-01-01	2271500000
1989-01-01	2559900000
1990-01-01	3992300000
1991-01-01	3010200000
1992-01-01	3405500000
1993-01-01	3656900000
1994-01-01	3821700000
1995-01-01	3995000000
1996-01-01	4561100000
1997-01-01	5272900000
1998-01-01	6039500000
1999-01-01	6339900000
2000-01-01	7023300000
2001-01-01	9360000000
2002-01-01	10303700000
2003-01-01	15637700000
2004-01-01	18842600000
2005-01-01	22194100000
2006-01-01	26036500000
2007-01-01	26512700000
2008-01-01	25596900000
2009-01-01	21653200000
2010-01-01	21622800000
2011-01-01	23151800000
2012-01-01	22768300000
2013-01-01	22648600000
2014-01-01	24025800000
2015-01-01	25205800000
2016-01-01	27380500000