Year	current US$
1989	82047368421.05263
1990	81395238095.2381
1991	78369230769.23077
1992	73833333333.33334
1993	64062693704.06447
1994	52057752332.225975
1995	47648452624.47588
1996	43987832043.06824
1997	49507532640.259384
1998	41011524889.14254
1999	30711640207.028687
2000	30318922002.053955
2001	37342938515.66427
2002	41787248022.90381
2003	49552308329.307846
2004	64238766685.46719
2005	85157868835.60086
2006	106031485148.51486
2007	142060594059.40594
2008	178339963331.70755
2009	114783526113.94334
2010	135958427544.39812
2011	161004939653.44232
2012	180602773435.06073
2013	187716627048.66757
2014	131977538852.59096
2015	94833354986.18474
2016	94324077169.51295
2017	113717855579.01636
2018	132164741725.99525
2019	155795133939.48962
2020	160040031866.4281
2021	193966075658.27533
2022	170470520721.1905
2023	184268021386.8059