Year	current US$
1990	3026996497.70838
1991	2493205504.72278
1992	2454693196.03011
1993	2210785204.36664
1994	1986601891.44022
1995	2038292248.24817
1996	2180862075.90023
1997	2135848154.75132
1998	2252964216.06744
1999	1827157551.25236
2000	1748146084.51389
2001	1673682859.65783
2002	1975165532.23985
2003	2421070197.09736
2004	3209002916.70356
2005	4100377094.23048
2006	5037001511.00849
2007	6219971601.92892
2008	8400278349.41634
2009	6884921125.1408
2010	8131109701.48722
2011	8847628966.78515
2012	9494226471.63699
2013	11095082714.0053
2014	11354807187.8232
2015	8222964249.83833
2016	6927225134.17948
2017	8088952607.04768
2018	8995899700.83449
2019	9814074188.73118
2020	9814425064.05938
2021	11059147704.9183