Year	current US$
1987	2200000.04768372
1988	3900000.09536743
1989	4849999.90463257
1990	6269999.98092651
1991	23280000.6866455
1992	4750000
1993	7000000
1994	5050000.19073486
1995	13770000.4577637
1996	30200000.762939498
1997	22049999.237060502
1998	25680000.3051758
1999	32639999.3896484
2000	18540000.915527303
2001	29079999.9237061
2002	31860000.6103516
2003	44419998.1689453
2004	56150001.5258789
2005	65529998.779296905
2006	69370002.746582
2007	109349998.47412099
2008	131479995.727539
2009	100169998.168945
2010	118050003.05175799
2011	61159999.8474121
2012	29309999.4659424
2013	43240001.6784668
2014	-1789999.96185303
2015	4119999.88555908
2016	8210000.038146971
2017	8770000.45776367
2018	13510000.2288818
2019	24989999.7711182
2020	25899999.6185303
2021	30559999.4659424
2022	29049999.237060502