Year	current US$
1993	24000000
1994	42000000
1995	26000000
1996	55000000
1997	46000000
1998	32380001.068115197
1999	48990001.6784668
2000	43349998.4741211
2001	62479999.5422363
2002	49470001.220703095
2003	47220001.220703095
2004	42590000.1525879
2005	44409999.8474121
2006	51000000
2007	48130001.0681152
2008	47259998.3215332
2009	49090000.1525879
2010	9689999.5803833
2011	75180000.3051758
2012	67629997.253418
2013	70569999.6948242
2014	47409999.8474121
2015	45860000.6103516
2016	6900000.09536743
2017	56529998.779296905
2018	42130001.0681152
2019	42080001.8310547
2020	104500000
2021	88239997.8637695
2022	87750000