Year	Current U.S. Dollars
1978-01-01	50360535.6529701
1979-01-01	48506595.1263134
1980-01-01	38274880.4372580
1981-01-01	38570443.5761894
1982-01-01	44776346.4854448
1983-01-01	45486486.4864865
1984-01-01	38077226.8538833
1985-01-01	31030099.8673092
1986-01-01	31269385.0267380
1987-01-01	37021425.5706484
1988-01-01	45855926.2442378
1989-01-01	45415941.7997786
1990-01-01	48290531.5744282
1991-01-01	76090668.3284001
1992-01-01	77311692.1269095
1993-01-01	72685094.5192438
1994-01-01	84330823.2197690
1995-01-01	91397108.9696071
1996-01-01	92821425.7766648
1997-01-01	111954876.0575920
1998-01-01	114489006.1565520
1999-01-01	111835483.8709680
2000-01-01	109311166.5120590
2001-01-01	109126926.6577010
2002-01-01	115661740.7367160
2003-01-01	136241649.9124460
2004-01-01	154834534.4903660
2005-01-01	161130202.3673160
2006-01-01	159262048.1927710
2007-01-01	181156388.5867290
2008-01-01	199798691.4947160
2009-01-01	180315083.4503200
2010-01-01	222744358.8332420
2011-01-01	243354718.9272820
2012-01-01	272698902.4642780
2013-01-01	294325255.8408960
2014-01-01	337103118.8029570
2015-01-01	350719705.5067240
2016-01-01	323909530.1813860
2017-01-01	347131054.5677500