Year	U.S. Dollars
2000-01-01	6399100000
2001-01-01	7067000000
2002-01-01	8510000000
2003-01-01	7257000000
2004-01-01	9767900000
2005-01-01	11940300000
2006-01-01	13148300000
2007-01-01	15574000000
2008-01-01	19293800000
2009-01-01	15446900000
2010-01-01	19057600000