Year	current US$
1990	16506989986.6854
1991	5086640657.71042
1992	1962514124.09113
1993	2862201228.50565
1994	6746504689.50636
1995	15661777323.5371
1996	14843809139.5083
1997	19259423034.2988
1998	22031337624.1856
1999	23078549734.0645
2000	23784038512.488
2001	25194769137.0718
2002	25887394133.9355
2003	26652097716.5005
2004	33959703287.3394
2005	32733941341.1776
2006	34416529254.4123
2007	44242181045.9735
2008	43528025723.7506
2009	24854764895.3021
2010	25869916179.2193
2011	26637751060.9367
2012	21546119019.4712
2013	19336394468.3665
2014	20733066935.5054
2015	17999679618.9001
2016	19495191676.6316
2017	25159110019.8895
2018	27229204834.4847
2019	26707512063.8296
2020	29571930834.2473
2021	34026854619.6494