Year	constant 2015 US$
1991	5212.004060993436
1992	5410.578744128549
1993	4568.73306584592
1994	5160.2054036582485
1995	5778.798991721095
1996	5977.5606253750875
1997	6024.009754296844
1998	6089.4533882416845
1999	6007.982430367494
2000	6194.651786669919
2001	5424.526250727743
2002	5656.2895449950265
2003	7006.343282211372
2004	9391.205912205078
2005	9204.63847865141
2006	8759.38424689308
2007	9171.741270247468
2008	10107.765708055225
2009	10880.116575152066
2010	9701.541041134196
2011	9362.968738668305
2012	8479.361861053087
2013	8156.949713166018
2014	8504.756010167792
2015	8557.249481773511
2016	9002.887263414477
2017	8037.067191054363
2018	9266.269472580125
2019	9552.95956147886
2020	11597.53774520488
2021	11062.046771631853
2022	12147.974062146528