Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	11884760000
1995-01-01	13217450000
1996-01-01	13345510000
1997-01-01	14188310000
1998-01-01	14923580000
1999-01-01	15447720000
2000-01-01	14951660000
2001-01-01	15875100000
2002-01-01	17753590000
2003-01-01	20496740000
2004-01-01	24407830000
2005-01-01	28820670000
2006-01-01	31614200000
2007-01-01	40589210000
2008-01-01	45781010000
2009-01-01	36555780000
2010-01-01	44279280000
2011-01-01	46181630000
2012-01-01	47474130000
2013-01-01	49265000000