Year US Dollars, Sum Over Component Sub-periods 1995-01-01 -8205870000.000001 1996-01-01 -1958440000.000000 1997-01-01 7079500000.000000 1998-01-01 8700670000.000000 1999-01-01 22790160000.000000 2000-01-01 19411180000.000000 2001-01-01 19531070000.000000 2002-01-01 9256740000.000000 2003-01-01 14796140000.000000 2004-01-01 22505720000.000000 2005-01-01 29539430000.000000 2006-01-01 37263840000.000000 2007-01-01 42719540000.000000 2008-01-01 48805350000.000000 2009-01-01 45547350000.000000 2010-01-01 50957330000.000000 2011-01-01 62716330000.000000 2012-01-01 38151370000.000000 2013-01-01 49429330000.000000