Year	current US$
1970	8180.75566566502
1971	22833.5881576526
1972	28133.7318079567
1973	42037.2426639703
1974	208634.404324986
1975	158070.346161937
1976	140931.150215836
1977	120978.415421408
1978	101133.777757265
1979	208235.931166462
1980	214303.315094455
1981	143021.353340347
1982	71986.4238805213
1983	79392.5172438812
1984	68315.0686122779
1985	62089.516234088
1986	19699.4402216813
1987	26347.8437476501
1988	16980.6118773788
1989	22678.9772664307
1990	3486280.45333596
1991	2935744.53225181
1992	1856369.4063976
1993	330293.098554418
1994	358173.944175068
1995	1455603.2314447
1996	850955.396350372
1997	527634.499558488
1998	551942.954148422
1999	117600.327648598
2000	971637.977215884
2001	2908482.52298595
2002	1230579.06234312
2003	1293577.03597978
2004	11049091.1270565
2005	7079726.16358332
2006	7753175.8668743
2007	12898946.7670518
2008	37604147.9592334
2009	10941845.6381947
2010	21416125.4327381
2011	26011503.5877518
2012	10137580.0271578
2013	5313115.92143125
2014	3412147.13760956
2015	2336866.18157054
2016	2851603.01915196
2017	3977030.90852838
2018	5341121.40621826
2019	3300275.05307983
2020	2537538.20257081
2021	4688316.75774378