Year	constant 2021 international $
1990	2314.6844473063693
1991	2310.2619458809118
1992	2390.0777628252595
1993	2439.250957946875
1994	2529.095683695791
1995	2646.205881951143
1996	2767.7125005766243
1997	2814.0592145820256
1998	2910.7422222610426
1999	3071.4245628627386
2000	3135.9231754444786
2001	3211.711306434436
2002	3269.8418697052903
2003	3441.4772033711274
2004	3636.3840377139636
2005	3849.536761578749
2006	4078.297178679886
2007	4307.9128106907665
2008	4386.815585112029
2009	4629.6786414207545
2010	4904.8582042819635
2011	5080.291099393533
2012	5281.776901019905
2013	5527.210944858346
2014	5833.006740335362
2015	6184.090191705285
2016	6586.659701410984
2017	6932.9188170728385
2018	7287.0893164426825
2019	7492.395055711307
2020	7070.059046932981
2021	7610.501895567224
2022	8023.864944427105
2023	8461.898041831424