Year	current US$
1980	5887615384.615385
1981	7165428571.428572
1982	6755133333.333333
1983	5592277777.777778
1984	6216166666.666667
1985	5463947368.421055
1986	6504411764.705883
1987	8523923076.923078
1988	7370647058.82353
1989	6338277777.777778
1990	3023636363.6363635
1991	1897325806.451613
1992	1327281443.298969
1993	673270225.4113214
1994	825225830.2583015
1995	4855176413.92863
1996	1224172005.014363
1997	2416527257.4305286
1998	3786357328.9000087
1999	2195713759.5618925
2000	1786062690.4748058
2001	2229856242.5891914
2002	2950112600.3695364
2003	3554431860.5080385
2004	4440804104.102191
2005	5005047222.394173
2006	5138060866.104959
2007	4279205626.6953216
2008	8054690310.343219
2009	10210813612.03522
2010	10751039899.003592
2011	12946934379.759447
2012	12091737191.092426
2013	13342631185.57751
2014	13366137412.03641
2015	11284190297.254368
2016	12888595976.569134
2017	14917719792.641367
2018	15732290550.691383
2019	16718924093.068512
2020	14395582924.137127
2021	16899105638.870403
2022	19822612076.020245
2023	20436113923.742588