Year	constant 2015 US$
1995	3022040049.74058
1996	3266017066.163547
1997	3283471892.285926
1998	3601395737.7470984
1999	3384005145.5769515
2000	3536094764.375459
2001	3817420179.237601
2002	3966564212.5123315
2003	3721757729.0853767
2004	4185303460.400501
2005	4574713777.282282
2006	4557293169.246606
2007	4485963637.922906
2008	4447423266.58377
2009	5237212726.726989
2010	4736498949.444711
2011	5170321512.799626
2012	4836007461.086578
2013	4860575018.223922
2014	4579985935.423013
2015	4303909780.884186
2016	4591178594.399901
2017	4708972685.562373
2018	4527248917.284855
2019	4556597229.964414
2020	4249099867.0725994
2021	4535112130.697658