Year current US$ 1965 450000.002980232 1966 570000.0058859587 1967 1279999.978840351 1968 1580000.0131130216 1969 529999.9974668025 1970 1299999.967217446 1971 640000.015497207 1972 1090000.0277906647 1973 1259999.9792873862 1974 2910000.0206381083 1975 2909999.990835788 1976 3649999.920278788 1977 6000000.106170767 1978 8409999.951720236 1979 22100000.290200155 1980 14379999.931901684 1981 15630000.06414949 1982 14860000.023618333 1983 15769999.85799194 1984 13829999.91998077 1985 11400000.02458691 1986 12940000.109374525 1987 19119999.915361412 1988 15490000.072866676 1989 21080000.586807724 1990 24220000.75131652 1991 14360000.180080533 1992 20829999.562352892 1993 26810000.600293264 1994 26329999.923706062 1995 29549999.698996495 1996 27880000.254139278 1997 24539999.781176455 1998 19159999.944269653 1999 18590000.21032989 2000 15450000.278651712 2001 19890000.33214693 2002 16810000.093653798 2003 18709999.72894788 2004 18609999.839216463 2005 27559999.685734536 2006 19339999.86760318 2007 26830000.706017025 2008 24250000.147148956 2009 35360000.20056957 2010 59200000.34943221 2011 75640000.95985834 2012 64090000.35934155 2013 51580000.64641243 2014 61880001.185461864 2015 49570000.29273329 2016 54989999.94248156 2017 59459999.972954385 2018 68789999.3881583 2019 49480000.78089535 2020 60900000.55916604 2021 62229999.590665124 2022 67969999.6318668