Year current US$ 1970 102.98362873042373 1971 107.45736781124478 1972 118.1244840309591 1973 143.90727585721163 1974 155.18048916034542 1975 169.5284710938666 1976 166.53936173233978 1977 188.21645174609733 1978 178.73309457157958 1979 190.013328632847 1980 213.11005577243643 1981 230.2899260876095 1982 243.35549718038112 1983 252.22158373250153 1984 272.13048568669467 1985 296.07151691589905 1986 288.93006887071357 1987 269.88919510630353 1988 308.3754528103335 1989 335.5917475513955 1990 349.8352768917825 1991 382.5346500448294 1992 424.70221834840385 1993 459.7849568107376 1994 550.115245042039 1995 663.208663023709 1996 751.0033419004634 1997 767.2412328592789 1998 683.4075895109593 1999 740.7661025581385 2000 796.3918911572924 2001 833.16992080147 2002 922.5787984949736 2003 1032.5138296579341 2004 1169.6280774649467 2005 1327.3562975414864 2006 1582.403846369644 2007 1980.0186836163557 2008 2422.62190566702 2009 2660.8623591762484 2010 3124.5423598000575 2011 3670.5471069019295 2012 4153.4553853162 2013 4493.240025667661 2014 4838.517754369757 2015 4992.8289921308415 2016 5078.706737956816 2017 5520.627168449813 2018 6018.588542902668 2019 6164.8541088031325 2020 6133.810725331428 2021 7176.369530972569