Year	current US$
1989	160919540229.88504
1990	148394863563.4029
1991	120518518518.51851
1992	110169491525.42372
1993	88711314053.77982
1994	86169868684.90846
1995	83370251412.11652
1996	78351802715.77962
1997	74070872947.27744
1998	43760947964.966515
1999	28184402924.451664
2000	43796658371.84501
2001	57912238601.302704
2002	61859649122.807014
2003	79248599595.49753
2004	108660187434.91844
2005	135654081491.16042
2006	183171185068.21277
2007	272876052374.34494
2008	370210689910.12103
2009	268922612656.10175
2010	329769100051.8146
2011	436224601708.8972
2012	476134256377.7344
2013	502972251531.1047
2014	441031546888.0555
2015	281034795401.5293
2016	279377217822.0233
2017	346042693425.0208
2018	342312734927.0163
2019	353900661651.98627
2020	321905965125.14795
2021	353990194734.0481
2022	462301625370.4354
2023	441932980255.70276