Year current US$ 1972 59999.99865889552 1973 119999.9991804361 1974 160000.00201165676 1975 1219999.9857693957 1976 600000.0033527613 1977 479999.9948591 1978 950000.0085681671 1979 870000.010356307 1980 1240000.0225752613 1981 799999.9970197675 1982 140000.00245869157 1983 79999.99821186069 1984 89999.99798834324 1985 99999.99962747106 1986 109999.99754130849 1987 129999.99709427358 1988 449999.993667006 1989 289999.9953806395 1990 379999.9952316282 1991 359999.9975413084 1992 230000.00230967999 1993 599999.9959021808 1994 2549999.956041569 1995 2079999.9963492153 1996 2239999.9797344194 1997 3310000.009834765 1998 1869999.9880045643 1999 2880000.0250339494 2000 3089999.9886751166 2001 3820000.046864152 2002 6429999.947547912 2003 9040000.012144448 2004 19280000.07569786 2005 22340000.396594405 2006 9589999.992400402 2007 10590000.087395314 2008 15610000.070184471 2009 9979999.90172684 2010 7780000.111088157 2011 13009999.845176928 2012 18719999.887049217 2013 8919999.789446589 2014 7880000.043660406 2015 6809999.885037537 2016 6690000.087022783 2017 10780000.144615762 2018 5449999.971315267 2019 8839999.852702022 2020 8440000.107511872 2021 11399999.68372285 2022 9010000.038892033