Year	current US$
1989	4714631629.723156
1990	5454714149.002954
1991	5413742794.544646
1992	5490399072.707819
1993	5809476620.123855
1994	6065916511.396375
1995	6338829246.7050495
1996	6824983386.230177
1997	9706131594.73001
1998	10609751589.08491
1999	11701074051.607008
2000	12188510502.80203
2001	12810139195.68849
2002	13522033860.620365
2003	13815285482.223171
2004	14561595214.34972
2005	15880290632.764534
2006	17519487560.9911
2007	19181589521.007175
2008	19715632380.912243
2009	19472852657.94797
2010	19970534794.264065
2011	20132397058.811447
2012	20956458002.983883
2013	21577109396.194508
2014	22445930817.04518
2015	23102620452.350555
2016	22574278106.92737
2017	23015519213.3082
2018	23981914437.113262
2019	24922246341.093918
2020	20308707813.122505
2021	22817438666.83515
2022	26699016715.643383
2023	28977919891.613876