Year	constant 2015 US$
2000	1752355047.9925108
2001	1829010495.0991426
2002	1979180245.0512702
2003	2227791727.077178
2004	2311161730.2649546
2005	2487872708.331822
2006	2579542248.649941
2007	2812073377.4858108
2008	3113248594.6705513
2009	3474220824.165917
2010	3601826207.544927
2011	4253080511.7414594
2012	4894162119.385871
2013	5093840913.74747
2014	5407638343.651273
2015	5491382978.723405
2016	5425101953.029701
2017	6020997191.853362
2018	6132032318.808947
2019	6039469425.535825
2020	5886646129.128969
2021	6267596324.3035345