Year current US$ 1970 990000.009536743 1971 170000.0017881394 1972 479999.98927116435 1973 449999.9880790713 1974 940000.0199675559 1975 1019999.9865144482 1976 4309999.987483022 1977 6470000.088214872 1978 8359999.813139439 1979 12359999.870881455 1980 5319999.92951751 1981 1370000.0401586297 1982 1529999.9937415114 1983 999999.9608844516 1984 1700000.010430812 1985 1069999.9835342166 1986 690000.0013411052 1987 2389999.9763816586 1988 949999.9899417158 1989 669999.9757111068 1990 9279999.89315868 1991 12879999.952390777 1992 24379999.92072579 1993 19149999.700486645 1994 46590000.01102686 1995 97949998.27817081 1996 92539998.52389097 1997 87009997.28590253 1998 123549998.60934913 1999 81310002.19471756 2000 54599998.91929323 2001 75889999.84040855 2002 55650000.2294779 2003 48299999.96349214 2004 44989999.77670608 2005 23530000.114813454 2006 19680000.083520964 2007 21390000.38802621 2008 31550000.451505214 2009 22050000.00447035 2010 15250000.186264552 2011 10830000.264570108 2012 8650000.222027302 2013 6859999.954700468 2014 9780000.010505322 2015 7160000.011324889 2016 10630000.293254845 2017 5180000.18596649 2018 7090000.152587893 2019 2449999.9210238447 2020 2899999.9612569804 2021 2350000.053644183 2022 178139992.71392795