Year	US Dollars, Sum Over Component Sub-periods
1992-01-01	17030000000
1993-01-01	19185000000
1994-01-01	20120000000
1995-01-01	19317000000
1996-01-01	19947000000
1997-01-01	17922000000
1998-01-01	18086000000
1999-01-01	17260000000
2000-01-01	16466000000
2001-01-01	17572000000
2002-01-01	18754000000
2003-01-01	23761000000
2004-01-01	27836000000
2005-01-01	30550000000
2006-01-01	33575000000
2007-01-01	39138000000
2008-01-01	42823000000
2009-01-01	37064000000
2010-01-01	36961000000
2011-01-01	42277000000
2012-01-01	42330000000
2013-01-01	44717000000