Year	current US$
1978	129667.2076
1995	840348.2086
1996	19318018.541
1997	1586283.7912
1998	11500422.9221
1999	7200008.9425
2000	8000014.8258
2001	15253000
2002	12000000
2003	8900000
2004	13798418.36
2005	19366300
2006	15380675
2007	25461384.4040548
2008	36819747.7760867
2009	39827093.5072951
2010	344287552.637922
2011	409563366.21142
2012	390138888.105225
2013	381930784.183918
2014	389485761.242304
2015	387768775.189673
2016	402531458.346674
2017	402634721.769049
2018	412910078.031613
2019	433499813.406953
2020	326160727.762653
2021	558427114.020975
2022	697869594.800424
2023	331594726.5625