Year	constant 2015 US$
2006	1057.1686481922743
2007	1103.818584891753
2008	1181.2944062826
2009	1119.8093290534773
2010	1134.1137299910367
2011	1209.1170628952295
2012	1308.902620616762
2013	1457.9977334515197
2014	1359.8177434615998
2015	1350.6952929389274
2016	1407.200481408381
2017	1427.4017445347697
2018	1529.7157599458217
2019	1602.1738181562355
2020	1669.2810090693895
2021	1579.7606146581004