Year	current US$
1960	132338590.91957489
1961	122861638.37836029
1962	124825190.59863761
1963	138870092.17906496
1964	155005187.8919114
1965	196800000
1966	199200000
1967	218369811.3207547
1968	251154716.9811321
1969	272754716.9811321
1970	340543396.2264151
1971	399678048.0280743
1972	453262999.2464205
1973	563763567.1405518
1974	801954602.774275
1975	755869311.5519253
1976	842240373.3955659
1977	1116359393.2322054
1978	1269463243.8739789
1979	1500945157.5262544
1980	1778891481.9136522
1981	1264048112.4835062
1982	1099079476.9285378
1983	1157473273.518356
1984	1243520405.0023215
1985	1272805940.5940595
1986	1347578853.046595
1987	1621277680.420583
1988	1652553107.2700882
1989	2033817038.5895698
1990	2347212147.6949964
1991	2737000652.617822
1992	3495369452.975868
1993	4150830308.545232
1994	4416263838.462937
1995	4821924110.671937
1996	5143782042.751913
1997	5803238051.5907135
1998	6578730704.148684
1999	6411945482.707925
2000	6545131998.118044
2001	6445457524.553776
2002	6828718281.6408205
2003	7367441232.127627
2004	8011642171.123239
2005	9170225548.464048
2006	10562844259.168705
2007	12333210658.410366
2008	14660106511.608109
2009	10800050971.068977
2010	13061016238.533592
2011	15465815787.566864
2012	16718693908.271042
2013	17055279990.539106
2014	17596280793.740196
2015	17360351863.90629
2016	18194546245.819607
2017	19552292622.889103
2018	20727758848.59719
2019	20249829012.559143
2020	17616395250.439495
2021	22479844457.511776
2022	27069161692.731403
2023	28542548254.907734