Year current US$ 1972 79999.9982118607 1975 330000.013113022 1976 9999.99977648258 1977 9999.99977648258 1978 200000.00298023198 1979 170000.00178813902 1983 670000.016689301 1984 389999.98569488496 1985 879999.995231628 1986 1389999.98569489 1987 2099999.90463257 1988 4650000.09536743 1989 2539999.96185303 1990 4800000.19073486 1991 7280000.20980835 1992 14710000.038146999 1993 16549999.2370605 1994 24299999.237060502 1995 27629999.1607666 1996 30450000.762939498 1997 16950000.762939498 1998 17729999.5422363 1999 30180000.3051758 2000 17020000.4577637 2001 69660003.6621094 2002 15399999.6185303 2003 21450000.762939498 2004 7269999.98092651 2005 17069999.6948242 2006 8640000.34332275 2007 25670000.0762939 2008 48549999.237060495 2009 18760000.2288818 2010 21299999.237060502 2011 154360000.61035198 2012 188800003.05175802 2013 90269996.6430664 2014 -27819999.6948242 2015 285279998.779297 2016 55650001.5258789 2017 -76080001.8310547 2018 62319999.6948242 2019 -26639999.3896484 2020 213639999.38964802 2021 163350006.10351598 2022 14369999.8855591