Year	current US$
1971	1110444137.99914
1972	1183479198.7962
1973	1349032351.49936
1974	1542372537.77468
1975	1740468240.24612
1976	2203364593.58558
1977	2775143743.95513
1978	2916740305.33103
1979	3246402478.53874
1980	3299780691.00871
1981	3155561690.80856
1982	3060504873.62232
1983	3205698001.69321
1984	3364376764.63694
1985	3520899622.7507
1986	3498400064.53032
1987	3674873794.55586
1988	3895186677.3447
1989	4068460160.58878
1990	4422455905.96975
1991	4817695330.3956
1992	5396234609.30647
1993	6252396838.31343
1994	7215227478.14247
1995	8392069127.05126
1996	8996742687.62185
1997	9537020121.494
1998	10204228277.12
1999	10371642678.1304
2000	10846393752.3353
2001	11230502025.7287
2002	11514585585.3363
2003	11925806914.5273
2004	12268614163.4462
2005	13156354101.8986
2006	14301232205.6951
2007	15135106890.5235
2008	15933034767.6206
2009	15364646447.6841
2010	16181878195.2981
2011	17994429084.5701
2012	18545690450.7782
2013	18734245499.2265
2014	19177294792.7476
2015	19824624009.2986
2016	20255430802.604
2017	20688070304.8099
2018	21313885633.4039
2019	22200966540.4098
2020	20002937559.0053
2021	23213085149.6738