Year	current US$
1990	7222184182.06474
1991	6720114704.62263
1992	7641878146.77617
1993	7124531987.72647
1994	9991185488.00882
1995	11213377753.3844
1996	13668459202.12
1997	15085369239.3557
1998	15967885516.1915
1999	24100796827.7285
2000	21206928826.1192
2001	20413337844.4198
2002	22310741526.455
2003	23035957747.1425
2004	22882740005.0917
2005	27155639891.1648
2006	31638854471.3743
2007	36100534221.8737
2008	43680643686.3849
2009	46452780268.5934
2010	57374453305.3398
2011	57886438918.1932
2012	64223920163.1339
2013	73699628448.2715
2014	79175526655.4794
2015	79261005132.8004
2016	81331293207.5942
2017	85004679773.2539
2018	83130695413.5698
2019	80090547681.4011
2020	50343066053.7127
2021	31367196049.144