Year	constant 2015 US$
1990	27949626952.58906
1991	19863914995.68068
1992	21512815610.549324
1993	22135618273.286255
1994	26536568972.00062
1995	32060490878.60157
1996	36519457289.49643
1997	33529589918.186913
1998	32475552619.54369
1999	31640388231.109318
2000	35080644341.684044
2001	37435276182.73288
2002	37986848925.25028
2003	38197225468.773834
2004	41080542710.5036
2005	42878804817.31797
2006	46983850805.427124
2007	53703460541.694214
2008	54195233497.63709
2009	44620803902.637344
2010	46497118756.03436
2011	47311997560.85168
2012	45336653285.22791
2013	43413669393.77001
2014	46516347375.37476
2015	52617754967.223946
2016	50524355912.39392
2017	53794115554.65217
2018	57931236343.31013
2019	60538116774.22633
2020	54925270593.01794
2021	65408323593.67854
2022	69088266680.21748
2023	64397621830.377556