Year	current US$
1991	2700062090.2429614
1992	2811863643.634037
1993	2888150620.8838167
1994	3777089783.2817335
1995	4285397641.634897
1996	4698692091.431366
1997	4679804804.804805
1998	4650098996.381512
1999	4147732309.0559907
2000	4175477807.387031
2001	4107066503.235369
2002	4121442988.3162293
2003	4294952862.7270637
2004	4630031050.442322
2005	5213395213.395213
2006	5853539363.586392
2007	6851390220.517737
2008	8632557503.674084
2009	8945621140.69451
2010	10073182602.539711
2011	12195272502.813986
2012	12956165220.773844
2013	13415009221.292135
2014	13661993262.520765
2015	13372842123.840338
2016	13308199967.882072
2017	14305833973.31933
2018	15327680282.650505
2019	15648622658.093222
2020	15540462628.696737
2021	16119863297.869324
2022	17617421446.341125