Year	constant 2015 US$
1991	2950416839.516816
1992	2675820936.191144
1993	2979124353.494145
1994	3167704199.8702126
1995	3270622834.8358574
1996	3663663268.0295515
1997	4117788329.30931
1998	4516788055.187598
1999	5068162146.399097
2000	5042508598.136519
2001	5658498766.099039
2002	5813339613.664164
2003	6744730379.6390705
2004	7326716473.024247
2005	7635623431.323275
2006	8163782358.972501
2007	8894695203.903856
2008	9542900221.67817
2009	10406018968.561539
2010	11013681366.845415
2011	11970934657.967066
2012	13093152380.313814
2013	13969708327.012007
2014	14928247573.216246
2015	15908852642.051764
2016	16643885018.6789
2017	16902521423.571163
2018	17670286506.644993
2019	18120018592.741287
2020	17856329297.246487
2021	18254843003.475048
2022	17781488323.60611