Year	current US$
1989	316971052.2713824
1990	348387069.6564526
1991	437206765.1834549
1992	484095750.0558596
1993	545752835.5592375
1994	602996316.4128361
1995	720593173.1474231
1996	763162443.8122951
1997	973118668.8677598
1998	557814505.5584339
1999	589427391.1937425
2000	731114373.9908606
2001	739927003.7733724
2002	739364968.111763
2003	848456367.8014454
2004	1042637711.848395
2005	1186970246.2909396
2006	1317882234.5754416
2007	1759783788.4710329
2008	2402317500.503256
2009	2667049404.9970384
2010	3107417940.1082172
2011	3655285571.614989
2012	4092664507.405874
2013	5091941514.920335
2014	5863806719.721607
2015	6371983423.116256
2016	6759172948.395635
2017	7089279766.773744
2018	7548443404.094201
2019	7780022726.945796
2020	7792011947.977775
2021	7314103503.894634
2022	6230635665.0166855
2023	6970579215.639554