Year	current US$
1990	16401901400.2448
1991	4997111349.95388
1992	1889610398.76947
1993	2809732855.18182
1994	6694124049.15479
1995	15601219651.936
1996	14790940850.8756
1997	19211749407.2634
1998	21985981541.0114
1999	23036261678.819
2000	23746468412.499
2001	25158691342.0719
2002	25850141948.0123
2003	26606497269.0045
2004	33909734500.1244
2005	32683143730.6059
2006	34364927831.4778
2007	44181319372.0491
2008	43459845146.2182
2009	24792564060.3764
2010	25810387821.797
2011	26576574318.5349
2012	21493731619.2132
2013	19290350773.6568
2014	20693324331.046
2015	17971064502.1317
2016	19470157434.2035
2017	25134810829.6905
2018	27201690984.7484
2019	26677793172.7885
2020	29538190715.1406
2021	33987744031.4364