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	530469999.924302
1977	527200000.464916
1978	676989998.325706
1979	799790002.483875
1980	999769996.4120979
1981	991749993.409961
1982	1107979992.95592
1983	963379994.26946
1984	1030469985.8277999
1985	1049589999.24362
1986	1445810003.16888
1987	1783400003.3289201
1988	2024429987.4175298
1989	2276569979.02691
1990	3002050000.28014
1991	2831449994.97756
1992	3008749964.1142797
1993	2897660001.30773
1994	2972549968.33019
1995	2553609965.25548
1996	2254339997.22451
1997	2017270005.3770099
1998	1458770003.3783898
1999	1265000008.4917998
2000	1135200002.94223
2001	857080004.535615
2002	2001379995.92535
2003	2821639998.8122296
2004	2797759986.95195
2005	3685530010.55121
2006	4022040019.8399997
2007	2465209985.3753996
2008	2208090012.52055
2009	2855600063.97963
2010	2916700019.62781
2011	3538300040.67719
2012	3107690000.65513
2013	2215389985.67685
2014	1938949987.9851902
2015	1694100008.99993
2016	1496899997.11886
2017	1606230002.3734598
2018	2209610033.64623
2019	2404879989.16954
2020	3237219996.39273
2021	2722180026.4604397
2022	3179650041.7049975