Year Current U.S. Dollars 1980-01-01 8537.92937933215 1981-01-01 9269.26961652991 1982-01-01 9446.15800194601 1983-01-01 9421.28565477640 1984-01-01 9590.68309906509 1985-01-01 8706.72508434699 1986-01-01 7041.56947006168 1987-01-01 7555.06680944800 1988-01-01 7958.67949196537 1989-01-01 8030.85457978182 1990-01-01 8528.98333446095 1991-01-01 9055.59111405318 1992-01-01 9082.74116884425 1993-01-01 9698.13480360754 1994-01-01 10130.41306842000 1995-01-01 10376.93488750010 1996-01-01 10544.66712548510 1997-01-01 10672.18394368580 1998-01-01 10076.18778453500 1999-01-01 10401.48044889270 2000-01-01 13636.34668377980 2001-01-01 12868.21099702810 2002-01-01 13102.33456826580 2003-01-01 14221.99259348860 2004-01-01 15846.47640931730 2005-01-01 17959.17853735420 2006-01-01 19307.99549202050 2007-01-01 20977.11052610750 2008-01-01 23067.56534651710 2009-01-01 19356.67235578740 2010-01-01 20722.10388955080 2011-01-01 22512.15960387120 2012-01-01 23649.36661391010 2013-01-01 24737.17178307040 2014-01-01 24983.37901533560 2015-01-01 22688.87824429680 2016-01-01 22560.58127074770 2017-01-01 23655.03560240130