Year current US$ 1960 161.47755935797696 1961 166.45419845901358 1962 176.02165191156564 1963 180.88748639595573 1964 195.75993406702614 1965 211.6319563630009 1966 222.24485284638695 1967 234.77947177170375 1968 246.5895686665025 1969 247.28094630116965 1970 259.81465117457424 1971 254.9258047338083 1972 271.6477103905844 1973 299.50274106710117 1974 329.82213835058326 1975 347.8119871977958 1976 404.22043028486746 1977 485.16151127452036 1978 872.3721296496587 1979 967.6596883586478 1980 1050.3363021077346 1981 1038.0310366513543 1982 1062.469765295605 1983 1081.9069300983326 1984 1153.3095411949405 1985 1202.9375602395153 1986 1257.389758940625 1987 1332.5176546951793 1988 1235.3654792280613 1989 1105.5561867986694 1990 974.2294838427075 1991 894.5102093941108 1992 924.9596766998347 1993 896.2836896593318 1994 821.2161476045038 1995 919.9379932559145 1996 872.5818384329565 1997 933.7557079347047 1998 1009.1627053750938 1999 990.2978340137888 2000 1079.6056663086952 2001 1118.9408942863279 2002 1119.4242734891084 2003 1142.8113497949053 2004 1201.2475046191678 2005 1289.8231140921705 2006 1409.5797482496137 2007 1559.8860440699555 2008 1713.4181644035145 2009 1762.3491602917363 2010 1874.2717037259868 2011 2053.9596949340294 2012 2107.345427865956 2013 2064.55053629483 2014 2164.4245500931816 2015 2257.2252836935418 2016 2295.5362700042347 2017 2403.3060883930293 2018 2457.6860424185984 2019 2498.509186352318 2020 2307.1309300321504 2021 2738.2162698970396 2022 3012.217340863242 2023 3247.231054626834