Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	5950000000
1981-01-01	6100000000
1982-01-01	5747000000
1983-01-01	5721000000
1984-01-01	6378000000
1985-01-01	6826000000
1986-01-01	7894000000
1987-01-01	9311000000
1988-01-01	10350000000
1989-01-01	11142000000
1990-01-01	12743000000
1991-01-01	12233000000
1992-01-01	13621000000
1993-01-01	14926000000
1994-01-01	17242000000
1995-01-01	19526000000
1996-01-01	21290000000
1997-01-01	22574000000
1998-01-01	22779000000
1999-01-01	25458000000
2000-01-01	30891000000
2001-01-01	27969000000
2002-01-01	27646000000
2003-01-01	30396000000
2004-01-01	36916000000
2005-01-01	40376000000
2006-01-01	43493000000
2007-01-01	50758000000
2008-01-01	58012000000
2009-01-01	46806000000
2010-01-01	56414000000
2011-01-01	64295000000
2012-01-01	62042000000
2013-01-01	61957000000
2014-01-01	62320000000