Year	current US$
1977	4619999.88555908
1978	2920000.07629395
1979	3089999.91416931
1980	7739999.771118159
1981	11140000.3433228
1982	6530000.20980835
1983	13189999.5803833
1984	5699999.80926514
1985	8199999.80926514
1986	5789999.96185303
1987	4739999.771118159
1988	17000000
1989	13760000.2288818
1990	8300000.19073486
1991	15960000.038146999
1992	15520000.4577637
1993	24549999.237060502
1994	35840000.1525879
1995	41119998.9318848
1996	20579999.9237061
1997	21159999.8474121
1998	16010000.2288818
1999	7239999.771118159
2000	13520000.4577637
2001	39950000.762939505
2002	22600000.3814697
2003	26629999.1607666
2004	64650001.525878906
2005	85639999.3896484
2006	59279998.779296905
2007	72029998.7792969
2008	44159999.8474121
2009	108930000.30517599
2010	80339996.3378906
2011	71550003.0517578
2012	74580001.8310547
2013	75879997.253418
2014	77720001.2207031
2015	74180000.3051758
2016	87330001.8310547
2017	51439998.626709
2018	74180000.3051758
2019	72889999.3896484
2020	111440002.441406
2021	67849998.4741211
2022	32709999.084472697