Year	current US$
1960	4300000
1961	3000000
1962	2200000
1963	2600000
1964	2100000
1965	1400000
1966	2200000
1967	1900000
1968	2500000
1969	3500000
1970	4300000
1971	10386868.252415
1972	17881732.8119882
1973	17031738.9495527
1974	19699657.185709
1975	12429610.6416726
1976	27940671.0755547
1977	33843540.1607594
1978	38638250.0951539
1979	55015241.5499931
1980	16225508.251952
1981	24046558.1861473
1982	4225169.60401218
1983	8967895.0961293
1984	12978416.7655813
1985	6387873.46221441
1986	15878653.9943488
1987	16999306.2747379
1988	12994198.7054406
1989	12597124.6090362
1990	3171132.86195957
1991	35071521.5494429
1992	27068750.2578135
1993	32061810.1311173
1994	51065999.7109502
1995	191604700.562486
1996	216115187.39431
1997	207090059.061501
1998	258214045.312059
1999	264042307.53134
2000	182148957.49891
2001	141429811.952002
2002	81722996.9951751
2003	62036117.5006275
2004	188499227.254247
2005	218384943.35269
2006	366983751.38156
2007	580919529.440742
2008	704223827.24731
2009	1091106608.80374
2010	1932321052.98169
2011	1921166446.80294
2012	2208492622.4783
2013	2374003645.18146
2014	1890702828.90932
2015	1840780199.77709
2016	2015058019.23916
2017	2240968064.93163
2018	2199357170.05143
2019	2266811047.05306
2020	2480148340.66575
2021	2629788023.22899
2022	2262464111.35382