Year	current US$
1974	1940000.0572204601
1975	230000.004172325
1976	19999.9995529652
1977	2250000
1978	50000.0007450581
1979	189999.99761581398
1980	50000.0007450581
1981	2410000.08583069
1982	8140000.34332275
1983	3640000.10490417
1984	1509999.9904632599
1985	3890000.10490417
1986	10979999.5422363
1987	4500000
1988	3930000.0667572
1989	6550000.19073486
1990	1889999.98569489
1991	7639999.8664856
1992	6630000.11444092
1993	55279998.779296905
1994	34069999.6948242
1995	47700000.762939505
1996	29819999.6948242
1997	35459999.0844727
1998	23700000.762939498
1999	32639999.3896484
2000	29940000.5340576
2001	29600000.3814697
2002	13020000.4577637
2003	23930000.3051758
2004	11100000.3814697
2005	14720000.2670288
2006	12079999.923706101
2007	23450000.762939498
2008	14489999.7711182
2009	9630000.11444092
2010	14560000.4196167
2011	10140000.3433228
2012	13380000.1144409
2013	23600000.3814697
2014	22459999.084472697
2015	19920000.0762939
2016	15579999.923706101
2017	12729999.5422363
2018	14159999.8474121
2019	9119999.88555908
2020	11710000.038146999
2021	8130000.11444092
2022	9909999.84741211