Year current US$ 1960 0 1961 0 1962 0 1963 0 1964 0 1965 0 1966 0 1967 0 1968 0 1969 0 1970 0 1971 0 1972 0 1973 0 1974 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 59999.9986588955 1988 39999.9991059303 1989 1929999.94941056 1990 9089999.76888299 1991 5110000.04224479 1992 11569999.9853969 1993 22949999.5820224 1994 13119999.8166412 1995 14119999.7048825 1996 13470000.050962 1997 10430000.0034273 1998 3020000.0070035504 1999 1669999.9645352399 2000 11469999.6449053 2001 1439999.98830259 2002 2549999.96721745 2003 15170000.044629 2004 21930000.200867698 2005 33309999.831020795 2006 38320000.294596 2007 58149999.4713813 2008 87550000.1627952 2009 81429999.7966737 2010 124389998.592436 2011 158280001.70551202 2012 241950000.56177402 2013 253730000.16436002 2014 316589993.914589 2015 342680004.75131 2016 399229998.677969 2017 391480000.93177 2018 414810004.202649 2019 424000002.171844 2020 418580004.669726 2021 500299999.598414 2022 514739993.6039003