Year	current US$
1960	307500000
1961	304000000
1962	325899993.89648396
1963	337299987.792969
1964	349799998.760223
1965	268800002.813339
1966	253600002.467632
1967	487900012.612343
1968	283600002.229214
1969	295900001.049042
1970	273799997.031689
1971	303200000.107288
1972	360409995.91350603
1973	412449993.72959095
1974	472640000.343323
1975	556920004.308224
1976	530509999.92340803
1977	528300000.48875797
1978	681889998.421073
1979	809260002.750903
1980	1006169996.50747
1981	994669993.4862549
1982	1112259993.16573
1983	968459994.193166
1984	1034699985.8468801
1985	1055219999.35806
1986	1453410003.0735102
1987	1793370003.5959501
1988	2032479987.60827
1989	2280979978.87433
1990	3014730000.58532
1991	2838429994.9966397
1992	3012749964.1142797
1993	2900680001.28865
1994	2975609968.27297
1995	2556539965.32224
1996	2258029997.28173
1997	2020650005.49145
1998	1458570003.3754098
1999	1267160008.57763
2000	1137000002.89455
2001	859510004.602373
2002	2004609995.94443
2003	2826249998.94574
2004	2802939986.78029
2005	3690540010.7801003
2006	4024560019.82093
2007	2465879985.39209
2008	2211020012.58731
2009	2857910063.92241
2010	2927180019.17005
2011	3540690040.7820897
2012	3109250000.59791
2013	2219519985.7913
2014	1940299988.0090399
2015	1695530008.94748
2016	1487699997.3095999
2017	1608530002.3257701
2018	2209610033.64623
2019	2404879989.16954
2020	3237219996.39273
2021	2722180026.4604397
2022	3179650041.7049975