Year	constant 2015 US$
1995	3892339866.271875
1996	4616341407.920312
1997	5204829264.133593
1998	5450428818.576561
1999	5104372857.503514
2000	5840362685.935154
2001	6368195691.4437475
2002	6688540910.302341
2003	6954754104.7402315
2004	7911207473.077731
2005	9770701149.685152
2006	10507649597.254293
2007	11963977355.769527
2008	12241399958.941402
2009	10665410125.65937
2010	12099264700.574995
2011	13624214721.862494
2012	14918235168.146868
2013	15016592376.387882
2014	15958384641.388664
2015	16432932180.812101
2016	17082946964.862103
2017	18168055009.944916
2018	18968373286.262104
2019	19214525378.124603
2020	19282743778.20468
2021	21026792638.542572
2022	23195620728.082024
2023	21818081698.955853