Year	current US$
1994	985182521.264557
1995	1489390433.65266
1996	2463943098.26335
1997	3226756666.571
1998	4649875476.51298
1999	5070554394.32684
2000	5631026981.73441
2001	5777820181.54258
2002	6555171074.05399
2003	8071204498.54688
2004	10029396326.9266
2005	10546623715
2006	11936344029.0819
2007	14295558331.2204
2008	17606291614.8243
2009	16126383337.2918
2010	15168863155.3543
2011	16092078643.2573
2012	14592410156.4508
2013	15507728910.414
2014	15593049846.6468
2015	13651574237.7534
2016	14233488159.6441
2017	15210641700.781
2018	16997318008.6282
2019	17078344259.9393
2020	16824320768.6584
2021	19531593962.1873