Year	current US$
1997	80406088.8620727
1998	174530374.663959
1999	452403157.491563
2000	496626475.424899
2001	1233132927.04398
2002	1336266925.26078
2003	1813519793.37355
2004	2427266571.09408
2005	2547614646.93943
2006	3671010361.24337
2007	5041780928.68635
2008	4479825860.3902
2009	4529038497.8833
2010	4366185779.56729
2011	4149556639.15232
2012	4283491070.5025
2013	4868373030.66019
2014	4744432933.35914
2015	4689224890.64006
2016	5026411768.10228
2017	6349265518.60968
2018	6685395101.27296
2019	7061491940.37337
2020	8525572339.31002
2021	9300314426.14548
2022	8674707926.02154
2023	9105921633.8925