Year	current US$
1993	770.3498470506536
1994	714.8271258577935
1995	736.9570663646901
1996	742.3120436866233
1997	753.31962965715
1998	705.365454104562
1999	685.2386439912704
2000	670.1375523920016
2001	643.9469440638228
2002	630.5644759261614
2003	686.63322312461
2004	832.3614445787192
2005	1028.4717109459739
2006	1152.9110842565876
2007	1268.0588569361703
2008	1380.8243193310682
2009	1417.588164308471
2010	1480.202393342455
2011	1568.0039731523666
2012	1698.822993642206
2013	1778.612109049441
2014	1833.6125284602258
2015	1730.0850173621054
2016	1558.0518786117404
2017	1459.5157560218545
2018	1509.9215123876781
2019	1574.1362744234923
2020	1515.9682406537306
2021	1580.493718747079
2022	1644.5270859565235
2023	1640.7958236611