Year	current US$
1990	234233188.488698
1991	253623219.480524
1992	278769534.706638
1993	339893849.651185
1994	390693537.411945
1995	480016234.470599
1996	557583101.536621
1997	676151143.26168
1998	778407744.708412
1999	823824258.419401
2000	950540112.521823
2001	1100756016.74318
2002	1340158668.48485
2003	1489813428.23845
2004	1876410238.19934
2005	2149103228.51598
2006	2326571913.79246
2007	2707696492.8722
2008	3155849710.63612
2009	3653515844.87561
2010	4327031815.83626
2011	4652333567.0443
2012	4832014081.72809
2013	5311061026.64916
2014	6090029646.39004
2015	7672622289.87617
2016	8034132968.13922
2017	8622768926.36577
2018	11189449994.8074
2019	13721698653.7165
2020	14981796859.076
2021	16822516856.5012