Year	current US$
1996	18339999.742806
1997	37169999.927282296
1998	62550000.0230968
1999	78689999.2935359
2000	94939998.3398616
2001	76180000.3945827
2002	95779998.51480131
2003	184779996.076599
2004	109069999.981672
2005	92150002.2858381
2006	80559999.6801466
2007	104690002.229065
2008	136219998.523593
2009	116919999.74288
2010	80990000.5441159
2011	80010001.6463548
2012	52260001.5290082
2013	7829999.95164573
2014	8319999.927654861
2015	6390000.03226101
2016	9349999.5470047
2017	14370000.308379501
2018	9100000.03501773
2019	6989999.91640449
2020	4000000
2021	7010000.01467764
2022	4289999.995380644