Year	current US$
2000	643367852.134112
2001	696125562.390923
2002	731065368.746604
2003	941174859.451651
2004	1142483442.27145
2005	1647612881.90716
2006	2047266984.37839
2007	2649912858.85365
2008	2070275867.34036
2009	1163107085.64392
2010	1216817559.45417
2011	2563254689.74655
2012	2661615210.10484
2013	2771272645.19625
2014	3138906979.08479
2015	2333613410.80007
2016	2468964192.64847
2017	3482830793.23584
2018	4039127579.42163
2019	3925807251.42795
2020	3469346847.50235
2021	5002786053.72748