Year	current US$
1991	308366307.2302763
1992	256122499.2589072
1993	237590627.52227083
1994	310987138.0528031
1995	347894398.40041363
1996	477693616.79520446
1997	522899848.3399825
1998	551653721.2296213
1999	558379996.9816312
2000	669318463.0135547
2001	1058826570.650061
2002	1277627022.4665077
2003	1501824531.6983447
2004	2093420471.0499282
2005	2471453991.6261096
2006	2666527628.936105
2007	3061895142.9472237
2008	3533230751.6813755
2009	3431857367.6426234
2010	3351471802.246513
2011	4587369287.454073
2012	5009344508.846867
2013	4814395425.927044
2014	5894893978.468449
2015	5279638423.575289
2016	4270264152.95059
2017	5444267918.052693
2018	6837559127.529466
2019	5761757677.532448
2020	4667776262.866191
2021	6523890986.023066
2022	9671655902.694912