Year	current US$
1990	315498099.024776
1991	2035521732.95249
1992	2211202897.01171
1993	2384216183.44284
1994	4562698609.15134
1995	4912501402.75786
1996	5155272979.51265
1997	6622053967.24528
1998	6167380427.47753
1999	5269520821.64311
2000	4648680337.54002
2001	4743566815.25002
2002	5352286201.45384
2003	5754212306.94877
2004	6274534141.02207
2005	8472586586.9374
2006	10221110318.1381
2007	13059621198.4688
2008	15621373643.9375
2009	14693299265.4427
2010	19659944786.9922
2011	23382966074.7911
2012	26035740932.6458
2013	28027314164.3494
2014	26727512933.565
2015	23962675792.2846
2016	21350342900.6816
2017	22288032213.0238
2018	21978626492.8237
2019	27752953642.534
2020	21954457518.971
2021	13872116737.0635