Year	constant 2015 US$
1995	330.7977510762928
1996	339.0564907562395
1997	358.6978261625597
1998	358.2696760103617
1999	390.6368854731365
2000	405.56692730184096
2001	427.208183252896
2002	442.77971974296264
2003	474.6814284407609
2004	512.7540832372797
2005	572.8276925464565
2006	626.6220543396857
2007	682.8679013220437
2008	765.9357709980547
2009	757.5694053366708
2010	779.7216175081545
2011	833.8670724293061
2012	886.7178178206908
2013	933.2341197485033
2014	951.8901250232308
2015	1006.8996658824053
2016	1072.9925577372944
2017	1137.615334605449
2018	1244.6545862237253
2019	1328.3312989849233
2020	1281.4292555619563
2021	1315.2623422619774