Year	current US$
1992	1418.268532039726
1993	1366.9057239299543
1994	1255.8368473141713
1995	1161.4894453128663
1996	1228.2037148510926
1997	1174.4516723391694
1998	1284.1860511479144
1999	1021.484072778435
2000	1077.72341662085
2001	1057.56631010623
2002	1261.9668572139733
2003	1558.584872078666
2004	2024.7221837091654
2005	2676.1372739517683
2006	3274.491393490245
2007	4001.6820902138206
2008	5353.019060358061
2009	4480.508000605876
2010	5017.310263397006
2011	5460.295895255634
2012	5735.831090178945
2013	6490.271126931486
2014	6842.255224719493
2015	4824.419478171563
2016	4055.4795204696316
2017	4690.779612485742
2018	5139.384722932613
2019	5563.113008760831
2020	5200.944074921044
2021	5812.0217405146095