Year	current US$
1995	9368716862.08084
1996	13263264354.6204
1997	12978346798.3526
1998	14108964575.4824
1999	11272231283.4312
2000	9349029849.1698
2001	8359284973.7177
2002	5751044041.62448
2003	7672570629.80478
2004	6266274920.55145
2005	16479157586.5656
2006	18672746619.6023
2007	32151420840.3792
2008	42257713277.8029
2009	30266243052.4548
2010	25879181186.0603
2011	37495761078.7069
2012	36387227293.5283
2013	37986429830.2784
2014	44294965301.6282
2015	45553544860.4526
2016	41761352564.0246
2017	45752352804.8569
2018	55116958863.4763
2019	61839399863.4731
2020	63807464183.4102
2021	70142646132.4219