Year current US$ 1975 150000.005960464 1976 689999.997615814 1977 1710000.03814697 1978 379999.99523162795 1979 3150000.09536743 1980 2259999.99046326 1981 6760000.228881841 1982 2349999.90463257 1983 6409999.84741211 1984 4309999.94277954 1985 3599999.90463257 1986 6800000.19073486 1987 1399999.97615814 1988 2700000.04768372 1989 1700000.04768372 1990 2900000.09536743 1991 1389999.98569489 1992 5250000 1993 6639999.8664856 1994 1750000 1995 -759999.990463257 1996 2900000.09536743 1997 2259999.99046326 1998 -850000.023841858 1999 -7199999.80926514 2000 -2799999.95231628 2001 -1259999.9904632599 2002 -769999.980926514 2003 4010000.2288818406 2004 21879999.1607666 2005 19770000.4577637 2006 8960000.03814697 2007 10739999.7711182 2008 6030000.20980835 2009 12800000.1907349 2010 6230000.01907349 2011 7239999.771118159 2012 7630000.11444092 2013 12869999.8855591 2014 9279999.73297119 2015 19129999.1607666 2016 11359999.6566772 2017 33520000.4577637 2018 11840000.1525879 2019 11659999.8474121 2020 17549999.237060502 2021 9430000.30517578 2022 15909999.8474121