Year	current US$
1972	2620000.0233948217
1973	3589999.942108986
1974	4700000.008568171
1975	13409999.95172025
1976	7369999.965652818
1977	8450000.060722232
1978	8830000.184476376
1979	10880000.140517946
1980	10510000.152513385
1981	9199999.939650295
1982	8020000.034943217
1983	9269999.848678702
1984	10050000.037997967
1985	9650000.011548396
1986	10419999.916106455
1987	18809999.713674176
1988	13890000.099316252
1989	12929999.994114041
1990	17239999.894052748
1991	15300000.160932545
1992	18860000.086948276
1993	19710000.25980175
1994	20039999.919012174
1995	26559999.96513127
1996	29270000.470802188
1997	33660000.06906688
1998	28179999.725893144
1999	30510000.3387779
2000	27430000.009015217
2001	28589999.96446073
2002	29249999.985098846
2003	38899999.65019524
2004	58539999.88920985
2005	64710000.16294413
2006	62069999.502971776
2007	73680000.69633134
2008	84649998.89209868
2009	87259999.67008835
2010	89719999.79764208
2011	102799999.08804892
2012	133080000.2627075
2013	117560002.14070079
2014	144890000.6059558
2015	131739999.72827724
2016	117200001.48750842
2017	120490000.88311729
2018	139719999.86469764
2019	130349997.70484868
2020	148610000.45947734
2021	179369998.71023
2022	108929998.5021353