Year	US Dollars, Sum Over Component Sub-periods
1985-01-01	6720220000
1986-01-01	9301610000
1987-01-01	16237500000
1988-01-01	20631440000
1989-01-01	23028220000
1990-01-01	22703740000
1991-01-01	26015590000
1992-01-01	35623230000
1993-01-01	40772460000
1994-01-01	40406520000
1995-01-01	44195850000
1996-01-01	53423620000
1997-01-01	58159500000
1998-01-01	54582130000
1999-01-01	57726010000
2000-01-01	60325650000
2001-01-01	69149130000
2002-01-01	65998190000
2003-01-01	71430580000
2004-01-01	85746330000
2005-01-01	103694320000
2006-01-01	118698580000
2007-01-01	139841060000
2008-01-01	155948240000
2009-01-01	136516930000
2010-01-01	141463180000
2011-01-01	176125610000
2012-01-01	178821710000
2013-01-01	169385520000