Year	constant 2015 US$
1996	2526398128.274916
1997	2245438677.71026
1998	2385799615.710663
1999	2824107209.4544473
2000	2785351910.7725782
2001	2997596915.158752
2002	3123428488.6765356
2003	3161026081.3535023
2004	3315265903.9360905
2005	3545732386.9995537
2006	3727580132.458485
2007	4021110237.783322
2008	4235558254.789073
2009	4465007380.150723
2010	4576348334.122064
2011	4715216638.675513
2012	4866566500.4002285
2013	4881885161.937745
2014	5127123247.92975
2015	5270341492.066789
2016	5496307063.118107
2017	5827406665.464984
2018	5993794433.424211
2019	6215507833.679077
2020	5963595796.170175
2021	6465332289.230419
2022	6862723243.903488
2023	7233769307.356324