Year	constant 2015 US$
1964	3051385362.9062138
1965	3656607532.4909244
1966	3751557737.425773
1967	4543947936.88205
1968	4696278121.777524
1969	5068564896.52207
1970	5940194115.92398
1971	6482571545.55181
1972	6658810055.430887
1973	5814504636.01023
1974	5369809791.31537
1975	5248218881.398797
1976	4808305701.700654
1977	4056901202.21625
1978	4205815912.1140747
1979	4210597577.110791
1980	4134090937.1632895
1981	3938042672.2978096
1982	3091687967.8785577
1983	2817083778.0669823
1984	3359461207.694823
1985	3720135367.447333
1986	3687346807.4698367
1987	4696278121.7775345
1988	5825434156.002728
1989	6261248765.703683
1990	6440902750.58041
1991	6548148665.5068245
1992	6468909645.561191
1993	7008554695.190899
1994	7180011540.073249
1995	7908190809.573588
1996	8776404553.977848
1997	9841349658.247107
1998	10221833572.985981
1999	12926889771.129852
2000	13129085890.991093
2001	13010227361.072653
2002	12481511831.435484
2003	12463068266.448095
2004	13257507750.902987
2005	12697335696.537348
2006	12600670923.153744
2007	12279684582.873943
2008	11149476582.34949
2009	9754596593.306633
2010	9130247763.735048
2011	10005975553.134174
2012	10535374177.770863
2013	9727272793.32538
2014	9135029428.731762
2015	8804300000
2016	8289579475.869809
2017	8158157264.870932
2018	15077882521.88552
2019	15318790304.152637
2020	10047178624.017956
2021	12025033492.704823
2022	12714456625.140287
2023	13068308457.912453