Year	current US$
1972	9530000.040307641
1973	11409999.940544363
1974	15989999.923855059
1975	38159999.91633001
1976	29329999.923706062
1977	24520000.413060192
1978	26340000.41335821
1979	27400000.38966536
1980	25090000.022202738
1981	24139999.98196958
1982	20420000.171288837
1983	20419999.701902267
1984	20920000.130310643
1985	19440000.06094574
1986	19210000.01952051
1987	30179999.433457848
1988	23929999.833926562
1989	25000000.121071927
1990	38089999.88995492
1991	27499999.93108213
1992	33820000.043138854
1993	39120000.41082502
1994	37120000.07554889
1995	52329999.9460578
1996	56170000.52705408
1997	64329999.97027217
1998	54069999.73766506
1999	62420000.132173315
2000	52119999.74586072
2001	53020000.211894505
2002	56499999.94412065
2003	80250000.33341348
2004	99759999.48941171
2005	115739999.75249164
2006	117469998.88494614
2007	132220000.2036989
2008	147899997.56589532
2009	134829998.8713116
2010	154730000.2370028
2011	180289998.23145562
2012	204520000.86382043
2013	186970001.3622641
2014	224710001.06632718
2015	205579998.7465142
2016	199040002.7390569
2017	208450001.9811094
2018	240399999.0299346
2019	221589997.3288178
2020	238830001.77331272
2021	324989997.6942688
2022	168339998.52277336