Year US Dollars 1960 3217100097.65625 1961 3846669921.875 1962 3254949951.17188 1963 2192239990.23438 1964 1691989990.23438 1965 1074479980.46875 1966 891000000 1967 751580017.08984 1968 805580017.08984 1969 863460021.97266 1970 804679992.67578 1971 769419982.91016 1972 595409973.14453 1973 569650024.41406 1974 539929992.67578 1975 838179992.67578 1976 497049987.79297 1977 409920013.42773 1978 515380004.88281 1979 256380004.88281 1980 450230010.98633 1981 442600006.10352 1982 381940002.44141 1983 247990005.49316 1984 370600006.10352 1985 524969970.70312 1986 364250000 1987 386320007.32422 1988 292880004.88281 1989 278450012.20703 1990 471670013.42773 1991 293730010.98633 1992 489040008.54492 1993 461769989.01367 1994 417450012.20703 1995 366640014.64844 1996 383600006.10352 1997 347130004.88281 1998 595619995.11719 1999 200009994.50684 2000 316529998.7793 2001 329269989.01367 2002 288380004.88281 2003 304989990.23438 2004 361420013.42773 2005 387279998.7793 2006 256500000 2007 381100006.10352 2008 292470001.2207 2009 283380004.88281 2010 194899993.89648 2011 179100006.10352 2012 144520004.27246 2013 193850006.10352 2014 148350006.10352 2015 76519996.64307 2016 156119995.11719 2017 184550003.05176 2018 145139999.38965 2019 178669998.16895 2020 209619995.11719 2021 202830001.83105