Year	constant 2021 international $
1990	12086.444196674143
1991	12335.901832315332
1992	12499.95263581148
1993	12872.1740876339
1994	13256.094704705403
1995	13185.875832511796
1996	13499.208247985349
1997	14019.022030590932
1998	14179.605917561536
1999	13961.358597327824
2000	14233.838688841492
2001	14065.261518803007
2002	13906.883166862963
2003	14055.361543491501
2004	14479.995395500771
2005	14851.785709135467
2006	15571.38042203588
2007	16240.250633082043
2008	16681.295199030046
2009	16124.283762247294
2010	16947.27377577881
2011	17515.075417726817
2012	17792.97075062049
2013	18173.91139069868
2014	18249.172551940115
2015	18200.297170567934
2016	17941.16356458264
2017	18094.961423853263
2018	18127.61929773131
2019	18112.942335950134
2020	16825.477165102846
2021	17846.222189339238
2022	18473.101828128318
2023	18717.678525367486