Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	4569000000
1981-01-01	4947500000
1982-01-01	4113800000
1983-01-01	4073500000
1984-01-01	4825900000
1985-01-01	4794400000
1986-01-01	4572500000
1987-01-01	5415800000
1988-01-01	6068400000
1989-01-01	7191400000
1990-01-01	8021000000
1991-01-01	8790100000
1992-01-01	9191800000
1993-01-01	9419200000
1994-01-01	10301400000
1995-01-01	9672900000
1996-01-01	10561400000
1997-01-01	11021000000
1998-01-01	11449700000
1999-01-01	11523300000
2000-01-01	13466800000
2001-01-01	12429700000
2002-01-01	12525300000
2003-01-01	12388900000
2004-01-01	13654400000
2005-01-01	15735900000
2006-01-01	15908400000
2007-01-01	17243900000
2008-01-01	17672600000
2009-01-01	14824300000
2010-01-01	15234500000
2011-01-01	15581900000
2012-01-01	16145500000
2013-01-01	20193800000
2014-01-01	21085900000
2015-01-01	22886200000
2016-01-01	24097200000