Year	current US$
1991	5145538206.498855
1992	3947118837.9029417
1993	4000647043.533992
1994	4073792466.0533223
1995	4318377402.51828
1996	5131313953.79725
1997	5938096247.932726
1998	6613165674.954649
1999	8029970195.17324
2000	7434084881.002417
2001	6381043590.352054
2002	7757974625.935844
2003	8199430621.984018
2004	9469366020.435543
2005	10311741754.95258
2006	10581644787.350813
2007	11836241750.83448
2008	14249700036.73154
2009	13727189582.932087
2010	13135192141.224323
2011	17784121864.206196
2012	24347910099.973976
2013	26381459190.0754
2014	27107380984.367275
2015	21657898368.170013
2016	16852074585.552868
2017	16402884047.37753
2018	20054989873.64862
2019	20369347642.10097
2020	19121927648.456055
2021	21241263566.791412
2022	24015910800.967888