Year	current US$
1960	521840005.34564304
1961	485030004.229397
1962	560949992.30653
1963	541000000.132248
1964	565500009.458512
1965	771439989.313483
1966	936370017.915964
1967	1099080006.42061
1968	1163130004.4246
1969	1244949969.35129
1970	1358769985.10957
1971	1560019992.36643
1972	1762580024.30201
1973	1948919972.74756
1974	2446089990.98279
1975	2049499985.46019
1976	1778789998.56114
1977	1712760019.33217
1978	2457819982.86583
1979	2905599991.7686
1980	3280459999.4421
1981	3579699967.74197
1982	3387380020.72275
1983	3456409982.9793
1984	3563239933.0139203
1985	3613659959.75211
1986	4455609995.521609
1987	5302220106.72092
1988	6285119989.7713995
1989	6520140013.02794
1990	7305250003.61353
1991	7038489975.86966
1992	9457730007.06173
1993	8854329848.21871
1994	9168730052.98898
1995	9445729942.042381
1996	7755819830.49214
1997	6541060136.318211
1998	8094069836.97414
1999	9560189985.27527
2000	8238370089.76936
2001	7077230101.34697
2002	6987380062.10327
2003	6781019978.04642
2004	6685149950.027471
2005	9256669940.47165
2006	7537669962.883
2007	7587049948.69232
2008	7813279914.37912
2009	8292370034.217831
2010	9412110191.82205
2011	7462340030.67017
2012	8832740129.47083
2013	11981920212.745699
2014	9472710051.53656
2015	8494249851.584431
2016	7697450126.64795
2017	8388929969.3107605
2018	8242509899.1394005
2019	7065630079.50783
2020	12696639971.2563
2021	10555570096.0159
2022	9532109870.43381