Year	current US$
2004	1640253880.20077
2005	2147527964.75223
2006	3082922707.44621
2007	4391459569.58563
2008	6143996358.19761
2009	5556450550.63292
2010	5875607867.80673
2011	6911022062.22266
2012	8288569241.98972
2013	9210747943.79269
2014	9853208337.65007
2015	8901359503.97641
2016	7470805603.73576
2017	8152614086.16445
2018	8188239802.67297
2019	8491672142.81165
2020	8294658055.54744
2021	9055722664.39267