Year	US Dollars, Sum Over Component Sub-periods
1988-01-01	8433780000.000001
1989-01-01	8544240000.000000
1990-01-01	10060840000.000000
1991-01-01	10305030000.000000
1992-01-01	10891850000.000000
1993-01-01	10604770000.000000
1994-01-01	11792360000.000000
1995-01-01	13200820000.000000
1996-01-01	13852110000.000000
1997-01-01	14157620000.000000
1998-01-01	15591570000.000000
1999-01-01	18367990000.000000
2000-01-01	22098960000.000000
2001-01-01	23521500000.000000
2002-01-01	25103890000.000000
2003-01-01	27863460000.000000
2004-01-01	33253269999.999996
2005-01-01	37308800000.000000
2006-01-01	45135030000.000000
2007-01-01	53986440000.000000
2008-01-01	62332280000.000000
2009-01-01	52224340000.000000
2010-01-01	53370510000.000000
2011-01-01	59174050000.000000
2012-01-01	57435450000.000000
2013-01-01	60062620000.000000