Year	current US$
2005	5519381028.672151
2006	6253765483.335635
2007	8136344248.14639
2008	10806481172.902267
2009	9539588375.515978
2010	11664932798.612238
2011	15181469321.300438
2012	17581661255.17127
2013	22515843056.247856
2014	22190029768.203262
2015	17270403337.528267
2016	16404500416.712843
2017	19656706059.00263
2018	23331723783.236244
2019	22923106831.141846