Year	constant 2015 US$
1997	4141300720.9285903
1998	4367948787.67383
1999	5020249952.313876
2000	5583835221.49849
2001	6143316882.726156
2002	6348125991.28982
2003	6676626055.782255
2004	7077054863.131829
2005	7346259875.120242
2006	7867202234.470565
2007	8139863562.982353
2008	8655645528.094751
2009	8724905161.638094
2010	9196299340.982178
2011	9244583825.09795
2012	9150786156.747755
2013	9337623369.130644
2014	9404667163.926552
2015	9442334426.19139
2016	9774867677.912283
2017	9962274800.928808
2018	10336364730.886524
2019	10413965304.334639
2020	10029367735.27159
2021	11277329285.256866