Year Current U.S. Dollars 1970-01-01 1498.27643678161 1971-01-01 1876.50323874687 1972-01-01 2196.71171134534 1973-01-01 2860.28057640115 1974-01-01 3432.70603291276 1975-01-01 4257.94971175400 1976-01-01 4844.67632927424 1977-01-01 5713.95491904992 1978-01-01 7235.54974098321 1979-01-01 8480.69482681448 1980-01-01 9483.17307607343 1981-01-01 8544.05832861263 1982-01-01 7813.69066733532 1983-01-01 7988.17095861200 1984-01-01 7198.70224749384 1985-01-01 7760.82840448295 1986-01-01 11271.32142902520 1987-01-01 14554.38753848260 1988-01-01 16398.01109393630 1989-01-01 16813.68394914820 1990-01-01 18326.80512346090 1991-01-01 18315.19630315850 1992-01-01 18768.93014371970 1993-01-01 16797.45885628420 1994-01-01 18123.96303482050 1995-01-01 21665.70189836720 1996-01-01 21422.35754340470 1997-01-01 19145.49603625230 1998-01-01 20496.66137185100 1999-01-01 20170.43841600270 2000-01-01 19004.10729103040 2001-01-01 19275.47333760660 2002-01-01 20652.87832878780 2003-01-01 27460.03019881300 2004-01-01 32070.37860319480 2005-01-01 32489.78190852780 2006-01-01 35458.12312104820 2007-01-01 39780.95144457530 2008-01-01 44367.05564978730 2009-01-01 44918.56487707560 2010-01-01 43988.33249319460 2011-01-01 47186.98146800480 2012-01-01 45936.76595169890 2013-01-01 47262.28276354790 2014-01-01 50408.33455482580 2015-01-01 44912.26609450270 2016-01-01 48159.53470572270