Year	Current U.S. Dollars
1997-01-01	24171996549.56620
1998-01-01	18227864876.18140
1999-01-01	18294665343.22340
2000-01-01	6540016052.96529
2001-01-01	12273211614.36300
2002-01-01	16047442246.14620
2003-01-01	21053478833.17650
2004-01-01	24645297988.74300
2005-01-01	25929088134.68880
2006-01-01	30194353183.66900
2007-01-01	39469270445.73890
2008-01-01	47904474772.76190
2009-01-01	41927513558.62480
2010-01-01	38567721683.95540
2011-01-01	45413259716.58210
2012-01-01	39336022093.06690
2013-01-01	43638339468.92220
2014-01-01	42422068939.30570
2015-01-01	35326609786.29080
2016-01-01	36058737148.16690
2017-01-01	38548514406.69870