Year	constant 2021 international $
1990	12917.09442693614
1991	10120.16288814348
1992	5533.210823177277
1993	3882.0202974764825
1994	3532.3200811072006
1995	3762.8115375030866
1996	4339.004668834698
1997	4951.812917574723
1998	5233.288376728161
1999	5495.245050528662
2000	5706.272365278365
2001	6074.086430172819
2002	6464.325396726477
2003	7227.737059607012
2004	7693.9152539206725
2005	8485.58670534953
2006	9337.989064201014
2007	10567.274716475777
2008	10856.103132800328
2009	10553.08963958534
2010	11294.368591711207
2011	12288.682886115614
2012	13193.959697405353
2013	13913.00182456612
2014	14475.31353560347
2015	14936.843411664659
2016	15442.956435805378
2017	16237.624223027518
2018	17228.679084750325
2019	18186.8816465807
2020	17031.144028342584
2021	18915.653400526273
2022	20966.528039113447
2023	22246.851845612975