Year	constant 2015 US$
2000	7829578803.856911
2001	6946765828.553881
2002	7102879046.933247
2003	7418561521.537472
2004	7345971120.685222
2005	7911427048.8442955
2006	9242687414.866869
2007	9975813424.103556
2008	11725267336.73399
2009	11598771558.963867
2010	12551897848.776648
2011	13027948405.72897
2012	13519456927.262405
2013	13350950108.437181
2014	13470907431.289055
2015	16066236197.05979
2016	16993477715.22208
2017	17940242533.351196
2018	19567861032.879875
2019	21624478929.487534
2020	21952841886.577103
2021	23066648428.50662
2022	25761666142.05566
2023	26958437578.86832