Year current US$ 1963 19999.9995529652 1964 9999.99977648258 1965 29999.999329447703 1966 19999.9995529652 1967 59999.9986588955 1968 219999.998807907 1969 180000.00715255702 1970 409999.99642372096 1971 170000.00178813902 1972 209999.993443489 1973 469999.998807907 1974 310000.002384186 1975 439999.997615814 1976 620000.004768372 1977 680000.007152557 1978 2000000 1979 3089999.91416931 1980 14039999.961853001 1981 5469999.79019165 1982 5239999.771118159 1983 5820000.17166138 1984 6119999.88555908 1985 6050000.19073486 1986 19219999.3133545 1987 16959999.084472697 1988 14479999.5422363 1989 23469999.3133545 1990 18959999.084472697 1991 13850000.3814697 1992 29229999.5422363 1993 11899999.6185303 1994 20030000.6866455 1995 19040000.915527303 1996 15609999.6566772 1997 24340000.1525879 1998 14010000.2288818 1999 21360000.6103516 2000 12659999.8474121 2001 17030000.6866455 2002 19340000.1525879 2003 25590000.1525879 2004 25989999.7711182 2005 23600000.3814697 2006 26440000.5340576 2007 24030000.6866455 2008 27729999.5422363 2009 26969999.3133545 2010 19120000.8392334 2011 28940000.5340576 2012 34930000.3051758 2013 31370000.8392334 2014 30500000 2015 32310001.373291 2016 31399999.6185303 2017 32200000.7629395 2018 31840000.1525879 2019 28010000.2288818 2020 30879999.1607666 2021 33040000.915527303 2022 32520000.4577637