Year	current US$
1990	-107880529.365943
1991	-74818273.5640375
1992	-143456314.301443
1993	-105846450.423827
1994	-77541561.8267739
1995	-199807662.372856
1996	-154676005.520865
1997	-196842331.761948
1998	-163276299.963373
1999	-106130314.599062
2000	-160876806.325048
2001	-127458998.174117
2002	-111907973.926547
2003	-170519029.077513
2004	-141064828.049986
2005	-101419814.55115
2006	-123065127.002117
2007	-59545360.2808574
2008	-86865404.6668751
2009	-150492054.993823
2010	233600317.226881
2011	-340495961.47363
2012	-59685848.9000224
2013	-1098731199.39143
2014	252675440.212681
2015	-545150665.63932
2016	-993682065.830281
2017	-503649967.123551
2018	-705856184.609915
2019	-377610042.225501
2020	-288206616.473463